Answer:17/30 lbs
Step-by-step explanation:
Jangles Co. earned $1.80 per share. Assuming a closing price of $40, the PE ratio is: (Round to the nearest whole number.)
Multiple Choice
7
22
72
20
The required value of PE is given as 22. The correct option is (B).
How to calculate the PE ratio of a company?The PE ratio can be calculated by taking the ratio of the price of stock to the earning of the company per share.
The given question can be solved as,
The earning per share is $1.80.
And, the closing price i s $40.
Thus, the PE ratio can be calculated as follows,
PE = 40/1.80
= 22.2
Which is equivalent to 22, rounding to the nearest whole number.
Hence, the PE ratio is given as 22.
To know more about PE ratio click on,
https://brainly.com/question/13633343
#SPJ1
an advantage of the exponential smoothing method over the moving average method is that it assigns exponentially weights as the observations get older.
Exponential smoothing of time collection records assigns exponentially lowering weights for latest to oldest observations.
In different words, the older the records, the much less priority (“weight”) the records is given; more moderns records is visible as extra applicable and is assigned extra weight. Smoothing parameters (smoothing constants),denoted through α, decide the weights for observations.
The simple formulation is:
St = ayt-1 + (1 - a) S-1
Where:
α = the smoothing constant, a fee from zero to 1. When α is near zero, smoothing takes place extra slowly. Following this, the satisfactory fee for α is the only that outcomes withinside the smallest suggest squared error (MSE).and t = time period.
One of the blessings of Exponential smoothing is ,the forecast may be built the use of most effective 3 values.
Only 3 portions of records are required for exponential smoothing methods.
1. It desires the forecast for the maximum latest time period.
2. It desires the real fee for that point period.
3. It desires the fee of the smoothing constant, a weighting thing that displays the load given to the maximum latest records values.
To learn more about exponential check the link below:
https://brainly.com/question/2456547
#SPJ4
PLEASE HELP!
A plane rises from take-off and flies at an angle of 9° with the horizontal runway. When it has gained 450 feet, find the distance, to the nearest foot, the plane has flown
Distance that plane has flown is 2812.5 feet.
What do you mean by trignometry?
Trigonometry “triangle” is a branch of mathematics that studies the relationship between the side lengths and angles of triangles.
Trigonometric ratios of triangles are also called trigonometric functions. Sine, cosine, and tangent are three important trigonometric functions, abbreviated sin, cos, and tan. Let's see how these ratios or functions are evaluated in the case of right triangles.
It is given that a plane rises from take-off and flies at an angle of 9° with the horizontal runway. It has gained 450 feet
Let the distance be x
According to the question:
sin 9 = 450/x
0.16 = 450/x
x = 450/0.16
x = 2812.5
Therefore, distance that plane has flown is 2812.5 feet.
To learn more about the trignometry from the given link.
https://brainly.com/question/24349828
#SPJ1
My new puppy's weight increased by 32% since her last vet visit.
If she now weighs 12 pounds, how much did she weigh at her last vet visit?
Round your percent to 2 decimal places.
Answer:
9 pound
Step-by-step explanation:
We know
The new puppy's weight has increased by 32% since her last vet visit.
100% + 32% = 132%
First, we have to find 1%
12 divided by 132% = 0.09 pound
Then we take
0.09 times 100% = 9 pounds
So, the puppy weighs 9 pounds on her last visit.
If you can, please give me a Brainliest; thank you and have a good day!
Answer:
The answer to the problem is 9 pounds.
Step-by-step explanation:
100+32=132
12/132=.09
.09x100= 9
I know my explanation wasn't very detailed, but I know sometimes people learn by just seeing it instead of having a long drawn out explanation so I wanted to give you that option incase it works better for you.
In the expression 5x6+3yr-7yz2+2y/z which of the following choices is the exponent in the term 5x6?
The exponent in the term 5x⁶ is of the expression 6
How to determine the exponent in the term?From the question, we have the following parameters that can be used in our computation:
Expression: 5x6+3yr-7yz2+2y/z
Rewrite the expression properly
So, we have the following representation
5x⁶ + 3yr - 7yz² + 2y/z
From the above expression, the spotlight is on the first term
i.e. 5x⁶
Considering an expression represented as axⁿ
Where x is a variable, the exponent is n
Using the above as a guide, we have the exponent of 5x⁶ to be 6
Hence, the exponent is 6
Read more about expressions at
https://brainly.com/question/15775046
#SPJ1
What is a credit card trap?
The chart below displays the residuals versus the dependent variable, X. . Which of the following conclusions can be drawn from this scatter chart? Select one: O a. The residuals have an increasing variance as the dependent variable increases. O b. The residual distribution is consistently scattered about zero. O c. The regression model follows the standard normal probability distribution O d. The model captures the relatict ship between the variables accurately.
The conclusion the residuals have an increasing variance as the dependent variable increases is correct.
What is scatter chart?
Charts that depict the relationship between two variables are known as scatter charts, also known as scatter plots. They are a very effective type of chart because they enable viewers to see relationships or trends right away that are difficult to see in almost any other form.
In order to observe and visually display the relationship between variables, a scatter plot is a common type of chart. Other names for it include scatter gram, scatter graph, and scatter chart.
The conclusion can be drawn from the scatter chart is,
The residuals have an increasing variance as the dependent variable increases.
There is a violation of the homoskedasticity (homogeneity of variance for residuals) assumption.
The given plot is used to check the assumption for homoskedasticity (homogeneity of variances) of data points.
Hence if the homoskedasticity assumption hold, the spread of data points should be along the line and the line should be approximately horizontal.
From the given plot we can see that spread is centered at the middle not equally distributed along the line which is a violation of the homoskedasticity assumption
Hence, the conclusion the residuals have an increasing variance as the dependent variable increases is correct.
To know more about scatter chart, click on the link
https://brainly.com/question/6592115
#SPJ4
The scatter chart is attached below.
I need assistance on This question please
Answer:
c. h+j+k / 3
Step-by-step explanation:
a researcher was interested in comparing the amount of time spent browsing the internet by men and by women. independent samples of 14 men and 16 women
The confidence interval limits include 0, which suggests that the two population means might be equal. There does not appear to be a significant difference between the mean amount of time spent watching television for women and the mean amount of time spent watching television for men.
The correct option is (a)
"Information available from the question:"
This is incomplete question:
Complete question is this:
A researcher was interested in comparing the amount of time spent watching television by women and by men. Independent simple random samples of 14 women and 17 men were selected, and each person was asked how many hours he or she had watched television during the previous week. The summary statistics are as follows.
Women Men
x1 = 11.7hrs x2 = 14.2hrs
s1 = 3.9hrs s2 = 5.2hrs
n1 = 14 n2 = 17
The following 99% confidence interval was obtained for μ1 − μ2, the difference between the mean amount of time spent watching television for women and the mean amount of time spent watching television for men:
-7.43hrs < μ1 − mμ2 < 2.43hrs
What does the confidence interval suggest about the population means?
a. The confidence interval limits include 0 which suggests that the two population means might be equal. There does not appear to be a significant difference between the mean amount of time spent watching television for women and the mean amount of time spent watching television for men.
b. The confidence interval includes only negative values which suggest that the mean amount of time spent watching television for women is smaller than the mean amount of time spent watching television for men.
c. The confidence interval limits include 0 which suggests that the two population means are unlikely to be equal. There appears to be a significant difference between the mean amount of time spent watching television for women and the mean amount of time spent watching television for men.
d. The confidence interval includes only positive values which suggest that the mean amount of time spent watching television for women is larger than the mean amount of time spent watching television for men.
Now, According to the question:
The given confidence interval is:
-7.43hrs < μ1 − mμ2 < 2.43hrs
The interval includes 0 and the populations sampled are small (< 30). Therefore, Option (a) is correct.
Hence, The confidence interval limits include 0, which suggests that the two population means might be equal. There does not appear to be a significant difference between the mean amount of time spent watching television for women and the mean amount of time spent watching television for men.
Learn more about Confidence Interval at:
https://brainly.com/question/24131141
#SPJ4
what is the slope of the line
use calculus to find the area of the triangle with the vertices (0, 5), (2, -2), and (5, 1).
The area of the triangle with the vertices (0, 5), (2, -2), and (5, 1) by using the calculus is 21 square unit.
We need to find the equation among all possible pairs and then integrate the equations from one co-ordinate to another co-ordinate
Equation of line passing through (0,5) and (2,-2) is
y-5 = [(-2-5)/(2-0)](x-0)
=>y-5 = (-7) /2x
=>y= (-7/2x)+5 -------(eq1)
Equation of line passing through (0,5) and (5,1) is
y-5 = [(1-5) / (5-0)](x-0)
=>y-5 = (-4/5)x
=>y = (-4/5)x+5-------(eq2)
Equation of line passing from (2,-2) and (5,1) is
y-(-2) = [[1 - (-2)] / (5-2)] / (x-2)
=>y+2=(3/3)(x-2)
=>y=x-4--------(eq3)
Now, we use definite integration to find the area between the different equation of line.
So, area enclosed between the equations is given by the
area =[tex]\int\limits^5_2[/tex][(-4/5)x+5 - (-7/2)x + 5)dx + [tex]\int\limits^5_1[/tex][(-4/5)x+5 -(x-4)]dx
=>area=[tex]\int\limits^5_2[/tex](7/2-4/5)x dx + [tex]\int\limits^5_1[/tex]((-9/5)x+9)dx
Using properties of integration,[tex]\int\limits x\, dx=x^{2}/2[/tex]
=>area=[tex]\int\limits^5_2[/tex](27/10)x dx + [tex]\int\limits^5_1[/tex](-9/5)x+9)dx
=>area=([27/10)×[5² - 2²])/2 + [ (-9/5)×(5²-1²) ]/2 +9×(5-1)
=>area=(27/20)×(25-4) + (-9/5)×24+9×4
=>area = (27×21)/20 + (-216)/5+ 36
=>area=(567/20) - (216/5) + 36
=>area= [(567-261×4)+(36×20)]/20
=>area=[(567-864)+720]/20
=>area=423/20
=>area=21 square unit.
Hence, area of triangle is 21 square unit.
To know more about area of triangle, visit here:
https://brainly.com/question/19305981
#SPJ4
Find the equation of the line through (5,-4) which is perpendicular to the like y= -x/2+2.
Answer:
y=2x-14
Step-by-step explanation:
Perpendicular lines have slopes that are opposite reciprocals:
Example: 4 and -1/4 are opposite reciprocals
y = -x/2+2 ==> slope for this equation is -1/2
Now take opposite reciprocal of -1/2
1/(-1/2) * (-1) =
1 * (-2/1) * (-1) =
1 * (-2) * (-1) =
1 * 2 = 2
y=mx+b
-4 = 2(5) + b ==> plug in y=-4, x=5, and m=2 from (5, -4) and a slope of 2
-4 = 10 + b ==> solve for b
-4 - 10 = 10 - 10 + b ==> subtract 10 on both sides to isolate b
b = -14
y=2x+(-14) ==> plugin -14 for b in y=mx+b
y=2x-14
Mackenzie is working two summer jobs, washing cars and landscaping. She must work at least 17 hours altogether between both jobs in a given week. Write an inequality that would represent the possible values for the number of hours washing cars, w, and the number of hours landscaping, L, that Mackenzie can work in a given week.
please help
Answer:
w + l ≥ 17---------------------------------
Total number of hours is w + l and it should be at least 17 hours, (equal to 17 or greater).
We can set inequality as:
w + l ≥ 17Given: HF || JK; HG ≅ JG
Prove: FHG ≅ KJG
To prove that the triangles are congruent by ASA, which statement and reason could be used as part of the proof?
To prove that the triangles are congruent by ASA, the statement and reason could be used as part of the proof is option (A) ∠FGH ≅ ∠KGJ because vertical angles are congruent.
Here we have two triangle FHG and KJG,
The sides HF and the side JK are parallel
The length of the side of the HG and the length of the side JG are equal
HG ≅ JG
According to the ASA property of congruent, if the two angle and one side of the triangle are equal to the two angle and one side of the other triangle, then the both triangles are congruent
Here we have to prove that angle FHG and angle KJG are vertical angles
Here the vertical angles are congruent
Therefore, the statement that can be the part of proof is option (a) angle FGH ≅ angle KGJ because vertical angles are congruent.
I have solved the question in general, as the given question is incomplete
The complete question is:
Given: HF || JK; HG ≅ JG
Prove: FHG ≅ KJG
To prove that the triangles are congruent by ASA, which statement and reason could be used as part of the proof?
a) FGH ≅ KGJ because vertical angles are congruent.
b) JKG ≅ HFG because vertical angles are congruent.
c) FHG ≅ JKG because right angles are congruent.
d) HFG ≅ KJG because alternate interior angles are congruent.
Learn more about vertical angle here
brainly.com/question/24460838
#SPJ4
Starting salaries of 150 college graduates who have taken a statistics course have a mean of $42,991. Suppose the distribution of this population is approximately normal and has a standard deviation of $9,166.
Using an 99% confidence level, find both of the following:
(NOTE: Do not use commas or dollar signs in your answers.)(a) The margin of error: (b) The confidence interval for the mean
At 85% confidence interval, the margin of error is 1.44 when the distribution of this population is approximately normal and has a standard deviation of $9,166.
Define margin of error.The margin of error is a statistic that describes how much random sampling error there is in survey results. One should have less faith that a poll's findings would accurately reflect those of a population census the higher the margin of error. In a random survey sample, a margin of error is a statistical measurement that takes into account the discrepancy between actual and anticipated findings.
Given,
Starting salaries of 150 college graduates who have taken a statistics course have a mean of $42,991. Suppose the distribution of this population is approximately normal and has a standard deviation of $9,166.
Margin of error:
At 85% confidence level
α = 1 - 85%
α = 1 - 0.85 = 0.15
Zα/2 = 0.075
α/2 = Z0.075
Zα/2 = 1.44
At 85% confidence interval, the margin of error is 1.44 when the distribution of this population is approximately normal and has a standard deviation of $9,166.
To learn more about margin of error, visit:
https://brainly.com/question/10501147
#SPJ1
How much potential energy does a 40 kg rock have if it was on a 10m cliff?
How much potential energy does the same 40 kg rock have if it was on a 5 m cliff?
If you shorten the height of an object, how does this affect its potential energy?
A baby carriage is sitting at the top of a hill that is 21 m high. The carriage with the baby has a mass of 1.5 kg.
A cinder block is sitting on a platform 20 m high. It weighs 7.9 kg. What is the PE?
There is a bell at the top of a tower. The bell weighs 19 kg. If the PE is 8550 J, how high is the tower?
The potential energy of an rock of 40 kg and at a height of 10m is 4000 kgm^2s^2
What is potential energy and its formula?
An object possesses potential energy as a result of its position in relation to other objects. Potential energy is so named because it has the ability to transform into other types of energy, such kinetic energy. the formula for potential energy is mgh where m is the mass, g is the acceleration due to gravity and h is the height of the object.
We are given a rock of mass 40 kg which is at a height of 10m
We substitute the values in the formula to find the potential energy of the rock
Potential energy = m*g*h
Potential energy = [tex]40*10*10[/tex]
Potential energy = 4000 kgm^2s^2
Hence the potential energy of the rock is 4000 kgm^2s^2
To learn more about the potential energy please refer the following link
https://brainly.com/question/14427111
#SPJ1
Which set of ordered pairs does not represent a function? a.{(3, 7), (–1, 9), (–5, 11)} b.{(9, –5), (4, –5), (–1, 7)} c.{(–2, 1), (3, –4), (–2, –6)}
From the given question, relation set - {(9, 1), (6,2), (3, 3), (6,4), (9,5)} does not represent the function.
What is a function?
In mathematics, a connection between one variable (the independent variable, x) and another variable is defined as an expression (the dependent variable, y).For example - f(x) = 4x + 6
The collection of ordered pairs from the question is presented.
It is evident that the relation set exists.
{(9, 1), (6,2), (3, 3), (6,4), (9,5)}
It not accurately depict the function since for x = 6, [y] has two potential values, none of which is possible.
so that's why relation set - {(9, 1), (6,2), (3, 3), (6,4), (9,5)} can not represent a function.
To know more about functions visit:
https://brainly.com/question/28193995
#SPJ4
Find the equation of a circle whose
center is (-3,5) and passes through
P(1,8).
The equation of the circle is [tex](x+3)^2 + (y-5)^2 = 5^2[/tex]
What does the equation for a circle look like in cartesian form?
Cartesian coordinate system with the origin indicated in red and a circle with a radius of two. A circle has the equation (x a)^2 + (y b)^2 = r^2, where a and b are the center's coordinates (a, b) and r is the radius.
The equation of a circle has the following conventional Cartesian form:
[tex](x-h)^2 + (y-k)^2 = r^2[/tex] ---------- 1
where (h, k) is the circle's center, (x, y) is any point on the circle, and r is its radius
Substitute the center (-3,5) into equation [1]:
[tex](x+3)^2 + (y-5)^2 = r^2[/tex] --------------------- 2
Substitute the point (1,8) into equation [2] and solve for r:
[tex](1+3)^2 + (8-5)^2 = r^2\\(4)^2 + (3)^2 = r^2\\16 + 9 = r^2\\25 = r^2\\r = 5[/tex]
Substitute 5 for r into equation [2]
[tex](x+3)^2 + (y-5)^2 = 5^2[/tex]
Hence the equation of the circle is [tex](x+3)^2 + (y-5)^2 = 5^2[/tex]
Learn more about equation for a circle
https://brainly.com/question/1471134
#SPJ1
Find the distance from the point (5, 5, 2) to the line
x=0, y= 5+3t , z=2+t
The distance from the point to the parametric line is given as follows:
5 units.
How to obtain the distance between the point and the parametric line?The first step is obtaining the vector from the line L(0, 5 + 3t, 2 + t) to the point P(5,5,2), as follows:
P - L = (5, -3t, -t).
The direction vector of the line is given as follows:
(0, 3, 1).
The dot product of the vector with the direction of the line is of zero, hence:
(5, -3t, -t)(0, 3, 1) = 0
-9t - t = 0
-10t = 0
t = 0.
Thus the point on the line which we will use to obtain the distance is of:
(0, 5 + 3(0), 2 + 0) = (0,5,2).
The the distance is obtained applying the formula for the distance between two points as follows:
Distance = square root [(5 - 0)² + (5 - 5)² + (2-2)²] = 5 units.
More can be learned about the distance between point and line at https://brainly.com/question/17143316
#SPJ1
using monitoring the gfture 2017 data, we examline whther a relationshiop exists bewteeen the race/thnicity of a studetn and how the studetn rates the impoiratnace being a community
Community colleges in the United States play an important role in higher education. In United States, everyone monitors they community colleges are primarily her two-year institutions of higher education that focus on teaching and learning and workforce preparation.
Community colleges are open access institutions that offer economically affordable entry into higher education. About half of first-time college-going students enroll in community colleges, which serve as her transition route to four-year colleges (Beach, 2011). However, despite the important role and primary focus of community colleges, students may view community college instruction as inferior and undesirable to her four-year college (Dougherty, Lahr, & Morest, 2017; Twombly, 2001; Twombly & Townsend, 2008). This general dissatisfied view of community college instruction has much to do with the historical legacy of community colleges, where most two-year schools are either officially called "junior colleges" or "junior colleges." is called Community colleges have reason to brag about progress. It tends to have a higher proportion of female and minority teachers compared to traditional her four-year colleges (Antonio, 2002; Marcotte, Bailey, Borkowski, & Kientz, 2005; Turner, 2001). While the high recruitment rate of minority teachers is laudable, most higher education institutions are still predominantly white and male dominated (with the exception of those serving minorities). Overall, despite the high proportion of women and minority teachers, empirical studies show that such teachers experience high levels of stress and frustration with the way students are treated in the classroom. (Allen et al., 2002; Pittman, 2010). For many teachers and teachers of color, the classroom environment serves as a reminder of the unfortunate social ills that plague our society (Harlow, 2003; Seo & Hinton, 2009).
Learn more about monitor:
https://brainly.com/question/3799624
#SPJ4
3. is it possible for two different (non-isomorphic) graphs to have the same number of vertices and the same number of edges? what if the degrees of the vertices in the two graphs are the same (so both graphs have vertices with degrees 1, 2, 2, 3, and 4, for example)? draw two such graphs or explain why not. hint. both situations are possible. go find some examples.
It is possible for the the two different non-isomorphic graphs can have same number of vertices and edges , and the two such graphs are drawn below .
Two graphs are said to be isomorphic if they contain same number of vertices connected in the same way.
So, Yes the two non-isomorphic graphs can have the same number of vertices and the same number of edges.
The two such graphs are drawn below
If the degrees of vertices in two graph are same then the graph will become isomorphic it will no longer be Non-Isomorphic.
Therefore, No two graphs that are non isomorphic can have same number of edges, vertices and degrees of vertices all at once.
Learn more about Isomorphic Graphs here
https://brainly.com/question/16260079
#SPJ4
If {v1, v2, v3} is an orthogonal basis for W, then multiplying v3 by a scalar c gives a new orthogonal basis {v1, v2, cv3}. True or False
If {v1, v2, v3} is an orthogonal basis for W, then multiplying v3 by a scalar c gives a new orthogonal basis {v1, v2, cv3 } is false statement.
Orthogonal basis:
Linear algebra, the orthogonal basis V of the inner product space is the basis of V whose vectors are mutually orthogonal.
When a vector of orthogonal basis is normalized, the resulting basis is an orthonormal basis.
let W be a vector space. The set S= {v₁,v₂,v₃} is an orthogonal basis for W.
The number of basis elements in W = 3 that is the dimensions of W is three.
If we multiply v₃ by c =0, then the set becomes
{v₁, v₂, cv₃} = {v₁, v₂,0}. The dimension of the set is 2, that is less than the dimension of W. If the scalar factor is 0, then it will not give a new orthogonal basis. Since in this case the number of basis elements will be reduced by 1 hence will change dimension of W.
Therefore, The statement is False.
To learn more about Orthogonal basis, refer:
https://brainly.com/question/23555459
#SPJ4
a well known social media company is looking to expand their online presence by creating another platform. they know that they current average 2,500,000 users each day, with a standard deviation of 625,000 users. if they randomly sample 50 days to analyze the use of their existing technology, identify each of the following, rounding to the nearest whole number if necessary: Provide your answer below: read M users Guides o= users Gallery Webex = users deric Support - Users urveys FEEDBACKM ORE INSTRUCTION URIME . Provous O Type here to search
The value of standard deviation is 88,389.
The Normal distribution id the contionuouse distribution with unimodal and symmetric shaped, it is widely used to approximated discrete distribution and sample mean and a total sum of the random variable, the approximation depends on the concept og the Central limit theorem.
The Central limit theorem states that the sampling distribution of the mean will always be normally distributed, as long as the sample size is large enough.
We have given that,
average = 2.500,000
standard deviation σ = 625,000
sample n = 50.
Therefore S = σ / √n
= 625000 / √50
= 625000 / 7.071
S = 88,389
Hence the standard deviation will be 88,389.
To know more about deviation here
https://brainly.com/question/16966492
#SPJ4
Please help me, my teacher never explained this
Answer:
20
Step-by-step explanation:
Since all sides are equal, it's an equilateral triangle.
Each medium interior angle of an equilateral triangle is 60.
So,
3x = 60
x = 60/3
x = 20
the metric that measures the percentage of the total number of items on an order that a firm shipped on time is. is the meaning of?
Unit Fill Rate: The percentage of a customer's purchase that was shipped on time. This statistic calculates the quantity and time elapsed after the order was dispatched, rather than when the client made the purchase.
On-time delivery is a key performance indicator (KPI) used by ecommerce and other delivery organizations to evaluate their ability to complete a client purchase by the specified delivery date.
The metric used to quantify supply chain efficiency is on-time delivery, or OTD. This KPI indicates whether or not an organization is meeting its goals in terms of promised delivery times, and it is critical for measuring carrier performance as well as maintaining customer satisfaction.
Learn more about to measures the percentage visit here;
https://brainly.com/question/14126037
#SPJ4
a survey was conducted to determine whether hours of sleep per night are independent of age. a sample of individuals was asked to indicate the number of hours of sleep per night with categorical options: fewer than 6 hours, 6 to 6.9 hours, 7 to 7.9 hours, and 8 hours or more. later in the survey, the individuals were asked to indicate their age with categorical options: age 39 or younger and age 40 or older. sample data follow.
Hours of Sleep Age Group
39 or younger 40 or older
Fewer than 6 38 36
6 to 6.9 60 57
7 to 7.9 75 73
8 or more 67 94
(a)
Conduct a test of independence to determine whether hours of sleep are independent of age.
Find the value of the test statistic. (Round your answer to three decimal places.)
What is the p-value? (Round your answer to four decimal places.)
p-value =
Using a 0.05 level of significance, what is your conclusion?
What is your estimate of the percentages of individuals who sleep fewer than 6 hours, 6 to 6.9 hours, 7 to 7.9 hours, and 8 hours or more per night?
Fewer than 6 %
6 to 6.9 %
7 to 7.9 %
8 or more %
For given study the hours of sleep per night is independent of the age.
Also, estimate of the percentages of individuals
Hours of sleep
Age <6 6-6.9 7-7.9 ≥8 Total
≤ 39 38 60 75 67 240
≥ 40 36 57 73 94 260
Total 74 117 148 161 500
% 14.8% 23.4% 29.6% 32.2%
Let the null hypothesis H0 : Hours of sleep per night is independent of age
alternate hypothesis Ha : Hours of sleep per night is not independent of age
Expected frequencies :
E1: ((38+60+75+67)*(38+36))/500 = 35.52
E2: ((38+60+75+67)*(60+57))/500 = 56.16
E3: ((38+60+75+67)*(77+75))/500 = 72.96
E4: ((38+60+75+67)*(65+92))/500 = 75.36
E5: ((36+57+73+94)*(38+36))/500 = 38.48
E6: ((36+57+73+94)*(60+57))/500 = 60.84
E7: ((36+57+73+94)*(77+75))/500 = 79.04
E8: ((36+57+73+94)*(65+92))/500 = 81.64
Then performing the Chi-square independence test X²
X² = Σ[(f1-e1)²/e1 + (f2-e2)²/e2... (fn - en)²/en]
F1 to f8 = 38,60,75,67,36,57,73,94
X² = ((38-49.92)^2)/35.52 + ((60-56.16)^2)/56.16 + ((77-72.96)^2)/72.96 + ((65-75.36)^2)/75.36 + ((36-38.48)^2)/38.48 + ((57-60.84)^2)/60.84 + ((75-79.04)^2)/79.04 + ((92-81.64)^2)/81.64
X² = 4.00
α = 0.05
Reject H0, if p < α
df = (row - 1)*( column - 1)
df = (2 - 1)*(4-1)
= 3
To find the p value from the X² square score at α = 0.05 and 3 degree of freedom
p = 0.261
Since, p > α ( 0.261 > 0.05) ; The result is not significant at α = 0.05 ; Hence we fail to reject the H0 (null hypothesis).
Now we need to estimate of the percentages of individuals who sleep fewer than 6 hours, 6 to 6.9 hours, 7 to 7.9 hours, and 8 hours or more per night.
Hours of sleep
Age <6 6-6.9 7-7.9 ≥8 Total
≤ 39 38 60 75 67 240
≥ 40 36 57 73 94 260
Total 74 117 148 161 500
% 14.8% 23.4% 29.6% 32.2%
Therefore, we can conclude that the hours of sleep per night is independent of the age.
Learn more about the test statistic here:
https://brainly.com/question/14128303
#SPJ4
TT D (t) = 10 + 4.9 cos ~t 6 The function D defined above models the depth, in feet; of the water t hours after 12 A.M. in a certain harbor: Which of the following presents the method for finding the instantaneous rate of change of the depth of the water; in feet per hour; at 6 AM ? A D(6)_D(O) 6_0 S 1.633 B D (6) = 0 D"' (6) = 1.343 D(6) = 5.100'
The method for finding the instantaneous rate of change of the depth of the water; in feet per hour; at 6 AM is B. D' ( 6 ) = 0 .
Given :
The function D ( t ) = 10 + 4.9 cos ( pi/6 * t )
D is defined above models the depth, in feet, of the water t hours after 12 am. Which of he following shows the method for finding the instantaneous rate of change of the depth of the water, in feet per hour, at 6 am .
Differentiate :
D'( t ) = -4.9 sin ( πt / 6 ) ( π / 6 )
D'( 6 ) = -4.9 sin ( π ) ( π / 6 )
we know that
sin ( π ) = 0
so D'( 6 ) = 0
Learn more about the function here :
https://brainly.com/question/5975436
#SPJ4
I need help with this please help me
Answer:
b. 40
Step-by-step explanation:
You want the missing leg length in a right triangle with one side of length 9 and the hypotenuse of length 41.
ReasonablenessThe missing side of any triangle will be between the sum and difference of the other two side lengths.
c-a < b < c+a
32 < b < 50
In a right triangle, every side length is less than the length of the hypotenuse:
b < c
32 < b < 41
There is only one answer choice in this range: b = 40.
__
Additional comment
You can make use of your knowledge of Pythagorean triples. One of them is {9, 40, 41}, which tells you that b=40.
Or, you can use the Pythagorean theorem to compute b:
a² +b² = c²
9² +b² = 41²
b² = 1681 -81 = 1600
b = √1600 = 40
For any odd integer, there is a Pythagorean triple with sides 1 unit apart such that those longer side lengths are about half of the square of that odd integer:
9² = 81 = 40+41
so {9, 40, 41} is a Pythagorean triple.
The simplest of these is ...
3² = 9 = 4+5 ⇒ {3, 4, 5} is a Pythagorean triple.
Complete the proof that RS ≅ PQ.
Answer:
below!
Step-by-step explanation:
reasons for each of the statements.
1. this is given information so there is nothing to prove here.
2. this is also given information, nothing to prove here.
3. this is also given information, nothing to prove here.
4. This is just because they are both 2 parts of the big segment (not sure what exactly is the reason your question is looking for but it something along these lines should be in your dropdown menu).
5. same as 4
6. since QR is equal to TU you can substitute TU with QR. QT stays the same.
7. Since we can see based on 5 and 6 that they have the same values by the same equations.
8. SAA
9. CPCTC
Hope this was helpful! :)
We need to prove triangles are PQU and SRT are congruent and we can see they have two angles marked as congruent and the included sides partially marked as equal and include the common segment.
We'll first prove the sides RT and QU are congruent, then prove the triangles are congruent. It will then give us the corresponding sides' congruence.
Missing reasons:
1. Given2. Given3. GivenThe first 3 statements reflect the given fact.
4. Segment addition5. Segment additionThe next 2 statements reflect segment addition postulate.
6. Substitution property of equality7. Transitive property of equalityAfter substitution of equal segments we prove that partially overlapping sides are congruent. Then it gives us the missing bit to prove the congruence of triangles.
8. ASA congruenceCorresponding Parts of Congruent Triangles are Congruent.
9. CPCTCA fibonacci sequence begins 0,1,1,2,3,5
a) what is the 8th number in the sequence
b) what is the 11th number in the sequence
In the given Fibonacci sequence , 8th number is 13 mad 11th number is 55 .
What is a Fibonacci Sequence?
The Fibonacci Sequence is the series of numbers:
0, 1, 1, 2, 3, 5, 8, 13, 21, 34, ...
The next number is found by adding up the two numbers before it:
the 2 is found by adding the two numbers before it (1+1),the 3 is found by adding the two numbers before it (1+2),the 5 is (2+3),and so on!In a Fibonacci sequence, the number is equal to the sum of the two preceding numbers.
so the seventh number is 3+5 = 8
8th number is 5+ 8 = 13
11th number is 21+34 = 55
now the sequence becomes 0,1,1,2,3,5,8,13,21,34,55
Hence , the 8th number is 13 mad 11th number is 55.
Learn more about Fibonacci Sequence at :
https://brainly.com/question/16934596
#SPJ1