Answer:
Sample mean = 6.25 hours per night.
Population mean = 5.5 hrs of sleep each night.
Step-by-step explanation:
A sample mean is the mean of the sample collected. The 25 students surveyed by the student is the sample. The average sleep time derived from the sample is the sample mean.
A population mean is the mean of all the population. Here the population are college students. The population mean is the mean derived from studying the sleep duration of all the population - college students
a car antenna
a.
line and point
b.
line and plane
c.
plane and point
d.
two planes
4+2(8²×4²)+6+4+6+6+6+2+2
Answer: =2084
4+2(82)(42)+6+4+6+6+6+2+2
=4+264(42)+6+4+6+6+6+2+2
=4+2(64)(16)+6+4+6+6+6+2+2
=4+(2)(1024)+6+4+6+6+6+2+2
=4+2048+6+4+6+6+6+2+2
=2052+6+4+6+6+6+2+2
=2058+4+6+6+6+2+2
=2062+6+6+6+2+2
=2068+6+6+2+2
=2074+6+2+2
=2080+2+2
=2082+2
=2084
Answer: 2048 please mark as brainliest
Step-by-step explanation:
4+2(82)(42)+6+4+6+6+6+2+2
=4+264(42)+6+4+6+6+6+2+2
=4+2(64)(16)+6+4+6+6+6+2+2
=4+(2)(1024)+6+4+6+6+6+2+2
=4+2048+6+4+6+6+6+2+2
=2052+6+4+6+6+6+2+2
=2058+4+6+6+6+2+2
=2062+6+6+6+2+2
=2068+6+6+2+2
=2074+6+2+2
=2080+2+2
=2082+2
=2084
The shaded area on the grid represents the part of the rectangular wall that was painted. Each small square on the wall has the same dimensions. Which percentage of the wall was painted?
The correct answer is 60%
Explanation:
A percentage represents a proportion of a total or 100% by using a number from 1 to 100. In this context, the first step is to count how many squares there are and how many were painted. This leads to the following results:
40 squares in total
24 painted squares
Knowing these two details it is possible to calculate the percentage. Follow this process:
- Write the values
40 squares = 100 % or total
24 squares = x (the value that needs to be found)
- Cross multiply to create an equation and solve this equation
40 x = 2400
x = 2400 ÷ 40
x = 60
The percentage that was painted was 60%
The data to the right represent the top speed (in kilometers per hour) Of all the players (except goaltenders) in a certain soccer league. Construct (a) a relative frequency distribution (b) a frequency histogram, and (c) a relative frequency histogram. What percentage of players had a top speed between 22 and 25 9 km/h? What percentage of players had a top speed between 26 and 29.9km/h?Speed(Km/hr) Number of players10--13.9 414-17.9 718-21.9 2022-25.9 83 26-29.9 31930-33.9 179 a. Construct a relative frequency distributionb. The percentage of players that had a top speed between 22 and 25.9 km/h was :______c. The percentage of players that had a top speed less than 13.9 km/h was:_________
Answer:
Kindly check explanation
Step-by-step explanation:
Given the data:
Speed(Km/hr)___No of players__Relative freq
10--13.9_________4______4/612 = 0.0065359
14-17.9_________ 7______7/612 = 0.0114379
18-21.9________20_____20/612 = 0.0326797
22-25.9_______ 83_____83/612 = 0.1356209
26-29.9_______319____319/612 =0.5212418
30-33.9______ 179_____179/612 = 0.2924836
The percentage of players that had a top speed between 22 and 25.9 km/h was : 0.1356209 × 100 = 13.56%
c. The percentage of players that had a top speed less than 13.9 km/h was: 0.0065359 × 100 = 0.65%
A two-way ANOVA with interaction has how many sources of variation?
a. 4
b. 2
c. 3
d. 5
Answer:
B(2)
Step-by-step explanation:
it's in two way factorial design there can be a maximum of two interactions in one main effect
There are 2 sources of variation in a two - way ANOVA with interaction.
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
A two-way ANOVA with interaction.
Now,
Here, A two-way ANOVA with interaction.
We know that;
Two-way ANOVA include two factors, each with two or more levels (groups), and collectively, factors are often referred to as the main effects in these types of ANOVA. The other source of variation in a two-way ANOVA is the interaction between the two factors.
Thus, Number of sources of variation = 2
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,
PLEASE HELP! WILL GIVE BRAINLIEST!
Which fraction is greater than the fraction represented by the model?
1/4
7/16
1/8
3/16
Answer:
7/16
Step-by-step explanation:
If it's easier to visualize, we can convert every into 1/16 including the graph to compare.
To convert the graph (currently in 1/8), we divide each segment to produce 16 segments, 6 of which are shaded (6/16 = 3/8).
The other fractions converted to 1/16 are as follows:
1/4 --> 4/16
7/16 --> 7/16
1/8 --> 1/16
3/16 --> 3/16
Now it's easy to tell which fraction is greater than the area represented in the model!
Suppose that a firm invests $5 million in the development of a new product that generates only about $250,000 in revenue after a full year on the market. The firm only has a patent for one year and other firms are likely to start producing similar products. Which of the following is the most rational decision for the firm to make?
Complete Question
The complete question is shown on the first uploaded image
Answer:
The correct option is C
Step-by-step explanation:
The correct option is
The firm should forget the new product, accept the loss of the investment and work on innovations that show signs of being more profitable.
The reason for this is that the period that the company is to recover the funds allocated to R &D is over i.e the patent(which is one of the most via way to recover their funds only last for one year so investing more resource on the product will lead to more loss for the company instead of a gain
How can you tell when to multiply and make boxes vs to simply combine like terms?
You can multiply ANYTHING. Just make sure that when you multiply, you change the exponents properly. Combining like terms is basically like normal addition. For example, you cannot add 6x +3y because they have different variables. If it was 3x+6x, then you can add it because they are like terms.
Hope this helps! Comment if you have any questions!
combine like terms to simplify the expression: 2a+3b-4c-b+2a+2c
Hey there! I'm happy to help!
First let's combine all of the terms with a.
2a+2a=4a
Now the ones with b.
3b-b=2b
And the ones with c.
-4c+2c=-2c
So, our simplified expression is 4a+2b-2c.
Have a wonderful day! :D
*BRAINLIEST* The graphs below have the same shape. Complete the equation of the blue graph.
Answer:
(x-2)^2
Step-by-step explanation:
The blue graph is shifted two units to the right of the "original" function x^2 (red). Let's recall the vertex form of a quadratic:
a (x-h)^2 + k
where a represents a constant that describes the opening of the parabola (up/down); h represents horizontal shift; and k represents vertical shift.
The blue graph is two units to the right (+2), there is NO vertical shift and NO change in how the parabola opens.
So, let's plug the appropriate values into vertex form:
(x-(+2))^2
= (x-2)^2
what percent of 132 grams is 43.2 grams ??
Which expression is equal to 3(56)?
3(50 + 6)
3(50) + (6)
5(30 + 6)
05(30) + 5(6)
Answer:
3(56)=168
3(50 + 6)=180
a)
Step-by-step explanation:
3(50+6)
=(3)(56)
=168
hope this helps!
round 43,628 to the thousands place
Answer:
please give brainlist
44,000
hope this helped
When graphing b< 6 would you use
an open di dod circle?
Answer:
Use an open circle
Step-by-step explanation:
Solve for x:
3x + 2x + 7 = 10x - 16
What’s the answer ?
Answer:
[tex]x=\frac{23}{6}[/tex] or [tex]4.6[/tex]
Step-by-step explanation:
[tex]3x + 2x + 7 = 10x - 16[/tex]
[tex]5x+7=10x-16[/tex]
Subtract 7 from both sides:
[tex]5x+7-7=10x-16-7\\5x=10x-23[/tex]
Subtract 10x from both sides:
[tex]5x-10x=10x-23-10x\\-5x=-23[/tex]
Divide both sides by -5:
[tex]\frac{-5x}{-5}=\frac{-23}{-5}\\x=\frac{23}{5}[/tex] or [tex]4.6[/tex]
Simplify (66/73)2
Tytytyy
Answer:
1.80821918
Hope it helps yuh
8 is 1 tenth of what number
Answer:
80
Step-by-step explanation:
You can figure this out by creating an equation:
1/10 x=8 (This shows that 8 is 1/10 of number x)
x=80 (Solve the equation by multiplying by ten)
Answer:One tenth is the same as one out of ten parts. It is a common fraction that means the same as 10% or 0.1.
Step-by-step explanation:
hi so idk what 4×4×7×2×0×9 is
The line segment is extended to cross both axes. What is the location of the y-intercept on the line? O (0, -22)
O (0-10)
O(0,-5)
O (0,5)
Answer: (0,-10)
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
Anyone know this one I’m kinda bad at math lol
Answer:
1/ 9^5
Step-by-step explanation:
When dividing exponents with the same base, subtract the exponents
9^2 / 9^7
9 ^ (2-7)
9^ -5
We know that a^ -b = 1/ a^b
1/ 9^5
You can rewrite it as: (using the law of dividing exponents)
9^(2-7) = 9^(-5) = 1/(9^5)
The fourth one
Drag the tiles to the boxes to form correct pairs. Not all tiles will be used. Match the binomial quadratic expressions with their factored form. Tiles x2 − 36 (x − 6)(x + 6) x2 + 16 (3x − 1)(3x + 1) 16x2 + 9 4(x+ 2)(x − 2) 9x2 − 1 4x2 − 16
Answer:
(x-6)(x+6) pairs with x^2-36
9x^2-1 pairs with (3x-1)(3x+1)
4(x+2)(x-2) pairs with 4x^2-16
Step-by-step explanation:
If you're using PLATO this is the correct answer I just did the problem myself
I'll even explain below and drop the image screenshot
The equation x2 − 36 can be factored into (x − 6)(x + 6) using the difference of two squares.
The equation 9x2 − 1 is the difference of two squares, (3x)2 – 12, so it factors into (3x − 1)(3x + 1).
We can factor 4 out of the expression 4x2 − 16 to get 4(x + 2)(x − 2).
The pairs are:
(x-6)(x+6) ⇔ x^2-369x^2-1 ⇔ (3x-1)(3x+1)4(x+2)(x-2) ⇔ 4x^2-16What are binomial expressions?A binomial is an algebraic expression with two terms. as an example, a + b, x - y, etc are binomials. We have a hard and fast of algebraic identities to locate the expansion when a binomial is raised to exponents 2 and three.
What are the sorts of expression in math?There are 3 major types of algebraic expressions which encompass: Monomial Expression, Binomial Expression, and Polynomial Expression.
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The probability distribution of random variable, X, is defined as follows:
X 0 1 2 3 4
Probability 0 0.3 0.1 0.3 0.3
A) Explain if the above is a valid probability model.
B) Is the described random variable discrete or continuous?
C) What is the expected value (mean) of the probability distribution?
D) Calculate P(X = 3).
E) Calculate P(X < 4).
F) Calculate P(X > 0).
G) Calculate P(X = 5).
H) Calculate P(X = 0).
I) What is the total area under any density curve?
Answer and Step-by-step explanation:
A) For the model to be a probability distribution, it has to follow two conditions:
1) The probability of each value of the discrete random variable is between, and included, 0 and 1:
2) The sum of all probabilities is 1;
In the table shown, the probabilities are from 0 to 0.3 - between 0 and 1;
Adding the probabilities: 0 + 0.3 + 0.1 + 0.3 + 0.3 = 1
Therefore, this model is a valid probability distribution model.
B) They are discrete because each value correspond to a finite number of possible values.
C) Expected value is calculated by
[tex]E(X) = \Sigma xP(x)[/tex]
[tex]E(X) = 0.0 + 1*0.3 + 2*0.1 + 3*0.3 + 4*0.3[/tex]
E(X) = 2.6
D) P(X=3) = P(3), which means probability of 3:
P(X=3) = 0.3
E) P(X<4): probabilities of values of X that are less than 4:
P(X<4) = P(0) + P(1) + P(2) + P(3)
P(X<4) = 0 + 0.3 + 0.1 + 0.3
P(X<4) = 0.7
F) P(X>0) = P(1) + P(2) + P(3) + P(4)
P(X>0) = 0.3 + 0.1 + 0.3 + 0.3
P(X>0) = 1
G) P(X=5) = P(5)
There is no probability of P(5) because the model doesn't "cover" that number.
H) P(X=0) = P(0)
P(X=0) = 0
I) The total area of any density curve is 1 because it represents all the possible values a variable can assume.
The answers are given as- A) Model is a valid probability distribution model.
B ) The described random variable is discrete.
C ) Mean E(X) = 2.6
D) P(X=3) = 0.3
E ) P(X < 4) = 2.6
F ) P(X > 0) = 1
G ) There is no probability of P(5)
H ) P(X = 0) = 0
I ) The total area of any density curve is 1
What is probability?Probability is defined as the ratio of the number of favorable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.
A) For the model to be a probability distribution, it has to follow two conditions:
In the table shown, the probabilities are from 0 to 0.3 - between 0 and 1;
Adding the probabilities: 0 + 0.3 + 0.1 + 0.3 + 0.3 = 1
Therefore, this model is a valid probability distribution model.
B) They are discrete because each value correspond to a finite number of possible values.
C) Expected value is calculated by
E(x) = ∑ P(x)
E ( x) = 0 + ( 1 x 0.3 ) + ( 2 x 0.1 ) + 3 ( 0.3 ) + 4 ( 0.3 )
E(X) = 2.6
D) P(X=3) = P(3), which means a probability of 3:
P(X=3) = 0.3
E) P(X<4): probabilities of values of X that are less than 4:
P(X<4) = P(0) + P(1) + P(2) + P(3)
P(X<4) = 0 + 0.3 + 0.1 + 0.3
P(X<4) = 0.7
F) P(X>0) = P(1) + P(2) + P(3) + P(4)
P(X>0) = 0.3 + 0.1 + 0.3 + 0.3
P(X>0) = 1
G) P(X=5) = P(5)
There is no probability of P(5) because the model doesn't "cover" that number.
H) P(X=0) = P(0)
P(X=0) = 0
I) The total area of any density curve is 1 because it represents all the possible values a variable can assume.
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Brainliest is given to the correct answer.
Four students calculated the volume of a 12.8 oz container. Their results are shown in the table. Whose calculation is the most accurate?
A. Wally’s
B. Rex’s
C. Amanda’s
D. Joni’s
Answer:
Joni.
Step-by-step explanation:
Joni's calculation is the closest to the actual value.
How much Wally was off: [tex]12.8-12.546=0.254[/tex]
How much Rex was off: [tex]12.8-12.59=0.21[/tex]
How much Amanda was off: [tex]12.8-12.69=0.11[/tex]
How much Joni was off: [tex]12.8-12.75=0.05[/tex]
She was off by 0.05, which is the smallest out of the other people.
This means that her calculation was the closest to the actual value of 12.8 oz.
Thus, her calculation is the most accurate.
Simplify the expression: (k − 4)(4)
Answer:
4k - 16 thats the answer
Hey there! I'm happy to help!
We are multiplying k-4 by 4. This means that we multiply each term in k-4 by 4.
4(k)=4k
4(-4)=-16
So, our simplified expression is 4k-16.
Have a wonderful day! :D
what is 1/3 + 5/9? HELPPPPP PLSSS
Answer:
8/9 is the correct answer for you problem
1 by 3 + 5 by 9 is equal to 8 by 9 this is your answer thank you
PLSSSS HELPP ASSPPPP!!!!
Answer:
33 gallons
Step-by-step explanation:
44/20 = 2.2
$2.2 per gallon
2.2x15
Answer:
not sure but i think its $33
Step-by-step explanation:
Consider the expressions 5 + 8k and 8k + 5. Determine why the expressions are equivalent.
Using k = 3 5 + 8k 8k + 5 5 + 8(3) 8(3) + 5 5 + 24 = 29 24 + 5 = 29
Using k = 5 5 + 8k 8k + 5 5 + 8(5) 8(5) + 5 5 + 40 = 45 40 + 5 = 45
Complete the statements.
If both expressions have the same value after substituting and simplifying two different values for the variable, then they are.
The value of both expressions when k = 3 is and when k = 5 is 45, so the expressions are.
Answer:
First is equivalent then 29 last equivalent
Step-by-step explanation:
If both expressions have the same value, then they are equal to each other.
What is an equivalent expression?The equivalent is the expressions that are in different forms but are equal to the same value.
Consider the expressions 5 + 8k and 8k + 5.
Using k = 3
5 + 8k = 8k + 5
5 + 8(3) = 8(3) + 5
5 + 24 = 24 + 5
29 = 29
Using k = 5
5 + 8k = 8k + 5
5 + 8(5) = 8(5) + 5
5 + 40 = 40 + 5
45 = 45
If both expressions have the same value after substituting and simplifying two different values for the variable, then they are equal to each other.
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30 60 90 triangle please help thank u
Answer:
√6
Step-by-step explanation:
The short leg is half the hypotenuse, so √8÷2=√2
The base is √3 times the short leg, so √2·√3=√6
Solve: 334% of what number is 33,400?
Answer:
100
Step-by-step explanation:
Rhianna had c CDs until she won 40 more in a contest. Write an expression that shows how many CDs Rhianna has now.
Answer: [tex]t=c+40[/tex]
Step-by-step explanation:
t=total
well the original amount didn't change so "c" stays the same.
and we just add a constant since she just won 40 CDs with nothing more.
so
Answer: [tex]t=c+40[/tex]
Answer:
t=c+40
Step-by-step explanation:
t = total
c= the number of Cds she has
40= plus the cds she already has
