The chance of a difference this large (or larger) happening by chance would be 6.03%
In this question, we have been given a die is rolled 1,000 times. the total number of spots is 3,711 instead of the expected 3,500
We need to find the chance of a difference this large (or larger) happening by chance.
The total number of spots is 3,711 instead of the expected 3,500.
So, the difference is:
3711 - 3500 = 211
So, the chance of a difference:
211/3500
= 0.0603
= 6.03%
Therefore, the chance of a difference this large happening by chance = 6.03%
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How do you simplify (2+i)/(1−)i completely?
Multiply the numerator and denominator by the conjugate of the denominator to simplify (2+i/(2-i)).
To determine, multiply the denominator's conjugate by the numerator and denominator.
[tex]\frac{2+i}{1-i} = \frac{1}{2} +\frac{3}{2}i[/tex]
The complex number a + bi has the conjugate a-bi. A real number is the result of a complex number and its conjugate. This knowledge will be used to remove the complex number from the given expression's denominator.
[tex]\frac{2+i}{1-i} = \frac{(2+i)(1+i)}{(1-i)(1+i)} \\=\frac{2+2i+i-1}{1+i-i+1} \\=\frac{1+3i}{2} \\=\frac{1}{2} +\frac{3}{2} i[/tex]
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Which expressions are equivalent to 4b
?
The expressions that are equivalent to 4b can be 2b + 2b and 5b - b.
How to illustrate the expression?Expression simply refers to the mathematical statements which have at least two terms which are related by an operator and contain either numbers, variables, or both. Addition, subtraction, multiplication, and division are all possible mathematical operations
In this case, it should be noted that examples such as:
5b - b = 4b
3b + b = 4b
2b + 2b = 4b
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subtract. 57−25 enter your answer as a fraction in simplest form by filling in the boxes. $$
After subtracting 2/5 from 5/7, the resultant fraction is 11/35.
What are fractions?A fraction, which also symbolizes a piece of a whole, is a mathematical symbol for any number of equal parts.
When expressed in common English, a fraction, such as one-half, eight-fifths, or three-quarters, specifies the number of components of a specific size. In a simple fraction, both are integers.
In a complex fraction, a fraction can be found in either the numerator or the denominator.
A suitable fraction has a numerator that is less than its denominator.
So, we have:
5/7 and 2/5
Now, perform subtraction as follows:
5/7 - 2/5
5*5 - 7*2/35
25 - 14/35
11/35
Therefore, after subtracting 2/5 from 5/7, the resultant fraction is 11/35.
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Correct question:
Subtract. 5/7−2/5 enter your answer as a fraction in simplest form by filling in the boxes.
what is the purpose of statistical inferences? to estimate mean, median, mode, variance, and skewness of large sample data to make generalizations about population characteristics from sample results to study characteristics of binomial or poisson random variables to fully describe the characteristics of the population
The main purpose of statistical inferences is to make generalizations about a population from a small sample result.
What is the meaning of statistical inference?Whenever we chart graphs, we try to represent raw data in tabular form. This data is mainly collected by us through surveys conducted on a small group of people, maybe our friends, family or anyone random. Through the data we receive, we can evaluate it to know results of out particular survey topic. Now, if we use this result to draw generalized conclusions about the whole population, then it is known as "inference" statistics. In inference statistics we donot limit the data to our sample size but rather use it to make predictions about the population.
For example: if we want to know the effictivity of a particular drug, we test it on a group of let's say, 100 people. The results show that about 75 treated got cured of the disease for which the drug was made to combat. Using statistical inference, we can conclude that in a population, the drug has an effictivity of 75%.
Further hypothesis can be conducted on the data using inferential statistics.
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In the diagram below, if the red lines are medians, what is the name for point O in the center of the triangle?
Answer:
c. the Centroid
Step-by-step explanation:
⭐What is a centroid?
the point of concurrency (intersection) of the medians of a triangle❌The answer is not A because:
there is no line, line segment, or ray that touches a circle at one point only❌The answer is not B because:
the orthocenter is the point of concurrency of the altitudes of a triangle❌The answer is not D because:
the circumcenter is the point of concurrency of the perpendicular bisectors of a triangle⭐if this response helped you, please mark it the "brainliest"!⭐
Find the exact perimeter of quadrilateral ABCD.
The perimeter of the quadrilateral is 10 + 6√2 units.
What is a quadrilateral?
A quadrilateral is a four-sided polygon with four edges and four corners that is used in geometry. The Latin words quadri, a variation of four, and latus, meaning "side," are the source of the name.
The coordinate of the vertices of the quadrilateral are A(-5,1), B(-1,4), C(2,1), D(-2,-2).
The length of AB arm is √[(-5-(-1))² + (1 - 4)²] = √25 = 5 units
The length of BC arm is √[(-1-2)² + (4 - 1)²] = √18 = 3√2 units
The length of CD arm is √[(2-(-2))² + (1 - (-2))²] = √25 = 5 units
The length of AD arm is √[(-5- (-2))² + (1 - (-2))²] = √18 = 3√2 units
The perimeter of a quadrilateral is the sum of length of all arms.
The perimeter of the quadrilateral is
AB + BC + CD + AD
= 5 + 3√2 + 5 + 3√2
= 10 + 6√2
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26. Jeremy has a 20%-off coupon for his purchases at a store. His total purchases are $27.50 without
the coupon.
What is 20% off of Jeremy's purchases?
A. $1.38
B. $5.50
C. $7.50
D. $22.00
The 20% off of Jeremy's purchases is $5.50.
What is discount?
Discount is a noun that designates a sum or a portion taken off of a product's suggested retail price. Check to see if you really need all of that stuff before waiting until after the holiday to buy it. A good or service's price being reduced is referred to by the noun discount.
Given:
Jeremy has a 20%-off coupon for his purchases at a store.
His total purchases are $27.50 without the coupon.
We have to find the 20% off (discount) of Jeremy's purchases.
The 20% off on $27.50 is.
$27.50 x 20% = $27.50 x 0.20 = $5.50
Hence, the 20% off of Jeremy's purchases is $5.50.
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See screenshot below.
Using system of linear equations he will require 20kg of 15% copper and 30kg of 70% copper to produce an alloy of 48% in 50kg
System of Linear EquationThe system of linear equations is the set of two or more linear equations involving the same variables. Here, linear equations can be defined as the equations of the first order, i.e., the highest power of the variable is 1. Linear equations can have one variable, two variables, or three variables.
To solve this problem, we need to write a system of linear equations and find the equivalent amount of the metal required to make the desired amount of the alloy.
0.15x + 0.7y = 0.48(50) ..eq(i)
0.15x + 0.7y = 24 ...eq(i)
x + y = 50 ...eq(ii)
solving equation (i) and (ii)
x = 20, y = 30
He needs 20kg of 15% copper and 30kg of 70% copper to get 48% of 50kg of alloy.
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a newsletter publisher believes that less than 59% of their readers own a rolls royce. for marketing purposes, a potential advertiser wants to confirm this claim. after performing a test at the 0.02 level of significance, the advertiser failed to reject the null hypothesis. what is the conclusion regarding the publisher's claim?
There is not sufficient evidence at the 0.02 level of significance to say that the percentage is less than 59%.
The correct option is (b)
Now, According to the question:
In this problem, we have the following hypothesis:
[tex]H_0[/tex] : μ [tex]\geq[/tex] 0.59
[tex]H_\alpha[/tex] : μ < 0.59
The null hypothesis is the prevailing claim which the study is testing, and the alternative hypothesis is what the study is trying to prove. The null hypothesis can either be rejected or not rejected by a sample study. A sample study cannot say that the claim is absolutely correct. Only a count of the whole population can do that, and that could change at any time. In this study, the null was not rejected. The study did not have enough evidence to reject the null.
Hence, There is not sufficient evidence at the 0.02 level of significance to say that the percentage is less than 59%.
The correct option is (b)
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The complete question is this:
A newsletter publisher believes that less than 59% of their readers own a Rolls Royce. For marketing purposes, an advertiser wants to confirm his claim. After performing a test at the 0.02 level of significance, the advertiser failed to reject the null hypothesis.
What is the conclusion regarding the publisher's claim? Select one:
a) There is sufficient evidence at the 0.02 level of significance that the percentage is less than 59%.
b) There is not sufficient evidence at the 0.02 level of significance to say that the percentage is less than 59%.
The midpoint of AB is M (5, 5). If the coordinates of A are (7, 8), what are the
coordinates
of B?
Hello,
I hope you and your family are doing well!
The midpoint of a line segment is the point that is exactly halfway between the two endpoints of the line segment. If the coordinates of one endpoint of the line segment are (x1, y1) and the coordinates of the other endpoint are (x2, y2), then the coordinates of the midpoint M are given by the following formula:
M = ((x1 + x2)/2, (y1 + y2)/2)
In this case, we are given that the coordinates of A are (7, 8) and the coordinates of the midpoint M are (5, 5). We can use these values to find the coordinates of B using the formula above:
M = ((x1 + x2)/2, (y1 + y2)/2)
(5, 5) = ((7 + x2)/2, (8 + y2)/2)
Substituting the known values and solving for x2 and y2, we get:
5 = (7 + x2)/2
10 = 7 + x2
x2 = 3
5 = (8 + y2)/2
10 = 8 + y2
y2 = 2
Therefore, the coordinates of B are (3, 2).
----
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Happy Holidays!
Answer:
(3,2)
Step-by-step explanation:
x: 5 to 7 is 2 up, so 5 down 2 is 3.
Y: 5 to 8 is 3, so 5 down 3 is 2.
5. Which of the following is a correct statement, where r(t) = (0, 1,t)? e) 2 (a) [r(t) dt=<0,t,5 (b) / r(t) dt=(0,t,-5〉+c. (c) | r(t) dt =〈0.t.-5) + c. (d) / r(t) dt = (0,t,,) + (c,c, c). (e) None of the other choices. 2
∫[tex]r(t)dt=[/tex][tex](0,t,\frac{t^2}{2} )+c[/tex] is accurate in its statement.
A definite integral whose limits are functions of the differential variable can be differentiated using Newton Leibniz Theorem's formula. Differentiation under the integral sign is another name for this. When limits are functions of the differential variable, the Newton Leibniz Theorem makes it simple to handle problems involving the differentiation of a definite integral.
Suppose that F(x) is a function whose derivative is f(x). Consequently, abf(x) dx = F(b) - F (a).
The Newton Leibniz Theorem can be used to determine the derivative of a definite integral when the limits of a definite integral are functions of t and the integrands are functions of x or vice versa.
As a result, statement C is the appropriate response.
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Six jokes are told in a magazine where one is written by female author . How many ways can they be delivred if a man told the jokes first
The number of ways jokes can be delivered if a man told the jokes first is; 120 ways
How to solve probability combinations?The six jokes are;
1. Little boy's joke about books.
2. Little girl's joke about books.
3. Teenage girl's joke about books
4. Teenage boy's joke about books.
5. Man's joke about books.
6. Woman's joke about books.
Now, we are told that the mans joke must be first.
Thus;
Number of ways to tell first joke = 1 way
Number of ways to tell second joke = 5 ways
Number of ways to tell third joke = 4 ways
Number of ways to tell fourth joke = 3 ways
Number of ways to tell fifth joke = 2 ways
Number of ways to tell sixth joke = 1 way
Thus;
Number of ways jokes can be delivered in this manner =
1 * 5 * 4 * 3 * 2 * 1 = 120 ways.
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Please help out will you :,)
For the given function the zeroes will be 0,-11/2, and 11 while the degree of the function is 5.
What is a function?It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.
T(h)=h(2h+1)²(h-11)²
The function is simplified as,
T(h)=h((2h)²+1²+2(2h)(1))(h²+121-22h)
T(h)=h[4h²+1+4h](h²+121-22h)
T(h)=(h³+121h-22h²)(h²+121-22h)
From the above function, it is observed that the degree of the given function is 5.
The zeroes of the given function are obtained as,
T(h)=h(2h+1)²(h-11)²
T(h)=0
h = 0
(2h+1)²=0
2h+1=0
h= -1/2
(h-11)²=0
h=11
Thus, for the given function the zeroes will be 0,-11/2, and 11 while the degree of the function is 5.
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[tex]\frac{4i}{3+i}[/tex]
Answer:
(2 (3 i + 1))/5
Step-by-step explanation:
Simplify the following:
(4 i)/(i + 3)
Multiply numerator and denominator of (4 i)/(i + 3) by 3 - i:
(4 i (-i + 3))/((i + 3) (-i + 3))
(3 + i) (3 - i) = 3×3 + 3 (-i) + i×3 + i (-i) = 9 - 3 i + 3 i + 1 = 10:
(4 i (-i + 3))/10
The gcd of 4 and 10 is 2, so (4 i (-i + 3))/10 = ((2×2) i (-i + 3))/(2×5) = 2/2×(2 i (-i + 3))/5 = (2 i (-i + 3))/5:
(2 i (-i + 3))/5
i (3 - i) = 1 + 3 i:
Answer: (2 (3 i + 1))/5
Which of the rational numbers -5/16, -13/24, -3/4, -7/12 is the smallest?
The smallest rational number among -5/16, -13/24, -3/4, and -7/12 is -3/4.
We have,
To determine the smallest rational number among -5/16, -13/24, -3/4, and -7/12, we need to compare their values.
Let's convert all the given rational numbers to have a common denominator of 48:
-5/16 = -15/48
-13/24 = -26/48
-3/4 = -36/48
-7/12 = -28/48
Now, the values of these rational numbers, when expressed with a common denominator, are:
-15/48, -26/48, -36/48, -28/48
Among these values, the smallest one is -36/48, which is equivalent to -3/4.
Therefore,
The smallest rational number among -5/16, -13/24, -3/4, and -7/12 is -3/4.
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Suppose triangle GHJ cong triangle CVB.; CV=8.GJ=11 , and VB = 9 What is GH ?
Answer:
b
Step-by-step explanation:
Lawson planted a tree when it was 14 inches tall and it will grow 3 inches per year. Ezra planted a tree when it was 8 inches tall and it will grow 5 inches per year. Determine how many years it will take for the trees to be the same height.
Answer:
3 years
Step-by-step explanation:
we can use the equation 14+3x=8+5x to determine when they will be they same height. X I'd
Which of the following is the value of x such that
5x – 12 = - 2
(a) 2
(b) - 2
(c) 23
(d) 10
Answer:
A) 2
Step-by-step explanation:
5x - 12 = -2 Add 12 to both sides
5x - 12 + 12 = -2 + 12
5x = 10 Divide both sides by 5
[tex]\frac{5x}{5}[/tex] = [tex]\frac{10}{5}[/tex]
x = 2
Answer:
[tex] \sf \: (a) \: 2[/tex]
Step-by-step explanation:
Given equation,
→ 5x - 12 = -2
Now the value of x will be,
→ 5x - 12 = -2
→ 5x = -2 + 12
→ 5x = 10
→ x = 10/5
→ [ x = 2 ]
Hence, the value of x is 2.
a test often conducted to initially identify and evaluate
Tests are frequently used to initially determine and assess potential worker safety and health issues.
What are two good measures of safety and health program effectiveness?The following factors are essential to a good workplace safety and health program: Leadership and management commitment. Accountability. Concern for safety.
An idea or rule that directs behaviors, processes, or tools with the goal of reducing the possibility or incidence of harm to people, property, or the environment.
In order to protect people's bodily, mental, and material health as well as the community's overall wellbeing, safety is the condition in which risks and circumstances that could cause harm are under control. It is a necessity for daily existence and is required by both individuals and communities in order to realize their objectives.
Workplace safety procedures are established practices that describe how to carry out duties with the least amount of danger to people, property, and working conditions. The processes cover work-related duties that deal with safety issues, safety gear, and work-area safety precautions.
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Name the triangle whose sides measure 18 cm, 22 cm, and 18 cm.
Answer: An ISOSCELES triangle.
Step-by-step explanation:
It has two sides of equal length.
The angles opposite to the equal sides are also equal in measure.
let x1 denote the thickness of coin battery a and x2 denote the thickness of coin battery b. assume that the distribution of x1 is n(1, 0.0004) and the distribution of x2 is n(1.01, 0.0009). if a coin battery a and a coin battery b are selected at random, what is the probability that the thickness of coin battery a will exceed the thickness of coin battery b?
The probability that thickness of coin A will exceed thickness of coin B is 0.3905
Here, we are given that the distribution of x1 is n(1, 0.0004) and the distribution of x2 is n(1.01, 0.0009), that is-
X1 ~ N (1,0.0004) and X1 ~ N(1.01,0.0009)
Now, if a coin battery is selected at random,
The probability that the thickness of coin battery a will exceed the thickness of coin battery b = P(X1 > X2 )
It can be rewritten as follows,
P(X1-X2 > 0)
Let Y = X1-X2
The Y ~ N (1-1.01, 0.0004 + 0.0009)
i.e Y ~ N (-0.01, 0.0013)
= P(Z > 0.278)
= 0.3905
Thus, the probability that thickness of coin A will exceed thickness of coin B is 0.3905
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The scale from a playground to this drawing is 5ft to 1cm . The scale from the same playground to another drawing is 8ft to 1cm. What are the side lengths of the playground in the other scale drawing?
Answer: 3ft to 1cm
Step-by-step explanation:
65 × 589 × 653 - 65 + 36 = answers
We got the answer of the equation 65 X 589 X 653 -65 +36 = 25,000,076 by applying the BODMAS rule in the given equation.
By Applying the BODMAS rule we get the answer of this question. BODMAs rule says that firstly solve the bracket, them solve the off, then do division, after then go to multiplication, then do addition and lastly after the addition do subtraction.
The chain should be followed while solving the question. So in the given question we firstly do the multiplication i.e
65 X 589 X 653 which is equal to 25,000,105
After doing multiplication, we will move forward and do the addition i.e
25,000,105 + 36 which is equal to 25,000,141.
Lastly, we will do the subtraction after doing multiplication and addition i.e.
25,000,141 – 65 which is equal to 25,000,076.
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Help with question 15
Match the following equation to the correct situation.
70%(p + 3.6) = 70%p + 2.52
A.
The amount the school district gets in federal aid for 70% of p students for 2.52 months.
B.
The number of pages two printers can print in one minute when one prints 2.52 per minute and the other is printing at 70% of its maximum pages per minute, p.
C.
The number of racers that will run 70% of p meters.
D.
The average GPA for 70% of seventh graders was greater than 2.52.
Therefore, the solution to this question of equation is the correct answer is option A.
Which of the several equation types are there?Either identity equations or conditional equations classify an equation. Every value of the variables has a corresponding identity. Only particular values of the variables are valid for a conditional equation. The equals symbol ("="), which divides two expressions, denotes an equation.
Here,
Given :
Equation : 70%(p + 3.6) = 70%p + 2.52
This equation matches the option A)
The amount the school district gets in federal aid for 70% of p students for 2.52 months.
Therefore correct option for the equation 70%(p + 3.6) = 70%p + 2.52 is option A)
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Evaluate lim x-->a [sin(x) + a0 + a1x + ...+ anx^n ]
The function lim x-->a [sin(x) + a₀ + a₁x + ...+ aₙxⁿ ] has lim x-->a [sin(a) + a₀ + a₁a + ...+ aₙaⁿ] as the limit of the function as x approaches a.
What is the function?Generally, To evaluate the limit of a function as x approaches a certain value, we need to substitute the value of x with the limit value and see what the function evaluates to.
In this case, we have:
lim x-->a [sin(x) + a₀ + a₁x + ...+ aₙxⁿ]
Substituting x with a, we get:
lim x-->a [sin(a) + a₀ + a₁a + ...+ aₙaⁿ]
This is the limit of the function as x approaches a.
Note that the terms a₀, a₁x, etc. are constants and will not affect the limit of the function. Therefore, the limit of the function as x approaches a is simply sin(a).
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Use the marginal tax rate chart to answer the question.
---Marginal Tax Rate Chart---
Tax Bracket Marginal Tax Rate
$0–$10,275 10%
$10,276–$41,175 12%
$41,176–$89,075 22%
$89,076–$170,050 24%
$170,051–$215,950 32%
$215,951–$539,900 35%
> $539,901 37%
Determine the amount of taxes owed on a taxable income of $38,520.
$3,852.00
$4,416.90
$4,622.40
$8,474.40
The amount of tax is $4,622.40 owed on a taxable income of $38,520. which is the correct answer would be option (C).
As per the given question, the marginal tax rate chart as
Marginal Tax Rate Chart Tax Bracket
$0 –$10,275 10%
$10,276 –$41,175 12%
$41,176 –$89,075 22%
$89,076 –$170,050 24%
$170,051 –$215,950 32%
$215,951 –$539,900 35%
> $539,901 37%
So, the effective tax rate for income of $38,520 lies in the range of a marginal tax rate of 12%.
So, the effective tax ;
⇒ 12% of $38,520
⇒ (12/100)38,520
⇒ $4,622.40
Thus, the amount of tax is $4,622.40 owed on a taxable income of $38,520.
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Lamont has a bar of chocolate. He breaks it into two pieces, where one part is 35% of the original chocolate. If the chocolate bar is 15 inches in length, how long is the longer piece?
The length of longer piece, which is 65% of original bar, 9.75 inch.
What is a percentage?A ratio or value that may be stated as a fraction of 100 is called a percentage. And it is represented by the symbol '%'.
Given that length of chocolate bar is 15 inch.
And Lamont breaks it into two pieces.
one part has 35% of original bar,
so other part has 100 - 35 = 65% of original chocolate bar.
Now, 65% of 15 inch
= 15 × 65 / 100
= 9.75 inch
Therefore, the length of longer piece, which is 65% of original chocolate bar, 9.75 inch.
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The scatter chart in the following figure was created using sample data for profits and market capitalizations from sample of firms in the Fortune 500 Click on the datafile logo to reference the data_ DATA filet DQUOO 160OO I 1200 3 80O 1 40OO 4000 800 1200 Pwfits ( milions) I6Q0 (a) Discuss what does this scatter chart indicates about the relationship between profits and market capitalization? The scatter chart indicates that there may be linear relationship between profits and market capitalization_ positive (b) The data used to produce this are contained in the file Fortunesoo: Calculate the covariance between profits and market capitalization_ If required_ round your answer to an integer: If your answer is negative use minus sign- Discuss what does the covariance indicates about the relationship between profits and market capitalization? This indicates that there is positive relationship between profits and market capitalization_ (c) Calculate the correlation coefficient between profits and market capitalization_ If required_ round your answer to four decimal places_ If your answer is negative use minus sign" . 0.8229 What does the correlations coefficient indicate about the relationship between profits and market capitalization? This indicates that there is between profits and market capitalization, strong linear relationship
The scatter chart indicates that there is a positive relationship between profits and market capitalization. This means that as profits increase, market capitalization also tends to increase.
The covariance between two variables is a measure of how much the variables tend to change together. A positive covariance indicates that the variables are positively related, which means that as one variable increases, the other tends to increase as well. In this case, a positive covariance between profits and market capitalization indicates that the two variables are positively related.
The correlation coefficient is a measure of the strength of the relationship between two variables. A correlation coefficient of 1 indicates a perfect positive relationship, while a coefficient of -1 indicates a perfect negative relationship. A coefficient of 0 indicates that there is no relationship between the variables. In this case, the correlation coefficient of 0.8229 indicates that there is a strong positive linear relationship between profits and market capitalization.
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consider the situation of exercise 9.11. estimation of the mean diameter, while important, is not nearly as important as trying to pin down the location of the majority of the distribution of diameters. find the 95% tolerance limits that contain 95% of the diameters
The 95% tolerance limits that contain 95% of the diameters is 2.262
Diameter:
In math, the straight line passing through the center of a circle or sphere and meeting the circumference or surface at each end is known as diameter.
Given,
Here we need to find the 95% tolerance limits that contain 95% of the diameters estimation of the mean diameter, while important, is not nearly as important as trying to pin down the location of the majority of the distribution of diameters.
According to the given question we have identified the following values,
Tolerance percentage = 95%
Diameter percentage = 95%
x = 61,492
n = 10
s = 3035
c = 95% = 0.95
Now, the value of t is determine by looking in the row starting with degrees of freedom
=> df = n−1 = 10−1 = 9 and in the column with
=> α/2 = (1−c)/2
=>0.025
Then as per the table of the Student’s T distribution:
=> tα=2.262
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