A population has a standard deviation of 97. We take a random sample of size 26 from this population. Let Xbar be the sample mean and let Xtot be the sample sum of our sample. These are random variables. a) What is the variance of this population

Answers

Answer 1

Answer:

Variance of this population = 9,409

Step-by-step explanation:

Given:

Standard deviation of population = 97

Random sample size = 26

Find:

Variance of this population

Computation:

Standard deviation (σ) = 97

Variance = Standard deviation²

Variance = (σ)²

Variance of this population = Standard deviation of population²

Variance of this population = 97²

Variance of this population = 9,409


Related Questions

Help me pls becks or anyone I need to pass

Answers

Answer:

area of 105° segment = 74.2 in²

Step-by-step explanation:

area of entire circle = πr² = (3.14)(9²) = 254.34 in²

area of 105° segment = (105/360)(254.34) = 74.2 in²

Helpppp lol pleaseeeeee

Answers

Answer: i thinks it's D. none of the above because they are all angles?

Step-by-step explanation:

The answer:

Your answer is D


Hope it helps..

Expand and Simplify 4(g + 5) + 3(g – 2)

Answers

The solution is 7g+14

PLEASE HELP!!!! I WILL GIVE 50 POINTS!!!
IT IS THE DOCUMENT BELOW PLEASE

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The answer is                                                                                                                                  

      S                                                     .For many reasons    

Therefore,

At the race car track in Australia, one lap around the track is equal to 3.295 miles. What is the value of the 9 in this number?

Answers

Step-by-step explanation:

hundredths. the answer is hundredths

Type the data that you collected (shown right) into the regression calculator. Be sure to choose a good window setting! The data show that the population of lily pads has growth rate.

Answers

The next answer is "an exponential."

Step-by-step explanation: The answers after that are 3.195 and 1.106

Answer: first part: an increasing

Second part: An exponential

Third part: 3.915, 1.106

Step-by-step explanation: i just did it

What has the lower mode?
A. exercise
B. video games​

Answers

I think video games because there are more dots!

If test scores of 65 and 75 were added to the set, what would happen to the mean of 75,95,90,95,60,95,75,95,90

Answers

Answer:

82.7

Step-by-step explanation:

Answer: the answer is that the mean would become smaller.

Step-by-step explanation: if you have the original 9 values, the mean is 85.5 repeating. Adding 65 and 75 to the data set changes the mean to 82.72 repeating.

Hope this helps! Please give brainliest ;)

Which expression has a greater value: log^3 1/3 or log ^b 1/b? Explain how you know.

Answers

The value of both the logarithmic expressions is equal which is equal to the negative one.

What is a logarithm?

Logarithms are another way of writing exponent. A logarithm with a number base is equal to the other number. It is just the opposite of the exponent function.

The expressions are given below.

[tex]\log _3 \dfrac{1}{3} \ and \ \log _b \dfrac{1}{b}[/tex]

This can be written as

[tex]\log _3 3^{-1} \\\\\log _bb^{-1}[/tex]

We know that the property of the logarithm

[tex]\log _a a = 1\\\\\log a^b = b\log a[/tex]

Then we have

[tex]\log _3 3^{-1} = -1 \log _33 = -1\\\\\log _bb^{-1} = -1 \log _bb = -1\\[/tex]

The value of both the expressions is equal which is equal to the negative one.

More about the logarithm link is given below.

https://brainly.com/question/7302008

#SPJ2

pls give this a try

Answers

Answer:

Step-by-step explanation:

(-7, 4.2)

ZA and B are supplementary angles.
If ZA measures 45°, then what is the measure of ZB?

1. 35
2. 45°
3. 135
4. 145

Answers

The answer is 4. 145 correct me if I’m wrong

Answer: 3. 135°

Step-by-step explanation: supplementary angles are angles that add up to 180° thus 180-45=135

Hope this helped!

Help me out pls and thanksssss

Answers

The second one i thing bro

A telephone pole support cable attaches to the pole 24 feet high. If the cable is 30 feet long, how far from the bottom of the pole does the cable attach to the ground?
A. 54 ft.
B. 40 ft.
C. 38 ft.
D. 18 ft.

Answers

The answer to your question will be choice A

Answer please now!!!!

Answers

Answer:

b=40

Step-by-step explanation:

You need to solve this because it is b divided by 2. How you solve this is to multiply all of it by 2. 20 x 2 is 40.

B=40 if that’s what your solving for
2•20 = 40 so b= 40

HELP IM LATE ON THIS! I WAS SUPPOSED TO DO IT YESTERDAY BUT IT WAS RAINING AND MY POWER WENT OUT!

Answers

Answer: 1/3 quart

Step-by-step explanation: since they both have the same denominator, you can just do 5-2=3. that gives you 3/9, which can be simplified by dividing both the numerator and denominator by 3 which equals 1/3.

if 3+3 = 9 then 2+2 = what?

Answers

Answer:

4

Step-by-step explanation:

3+3 is not 9, but 3x3 is.

So 2+2 is 4

--

hope it helps

Answer:

4 or 6 so sorry if im wrong

1. Zoey took a taxi from her house to the airport. The taxi company charged a pick-up fee of $1.20 plus $3.25 per mile. The total fare was $40.20, not including the tip. Write and solve an equation which can be used to determine xx, the number of miles in the taxi ride.

Equation:
Answer: xx =

Answers

equation:3.25x+1.2=40.2

ansrew:x=12

To find the solution to a system of linear equations, Verdita begins by creating equations for the two sets of data points below.

Data Set A
A 2-column table with 4 rows. Column 1 is labeled x with entries negative 1, 1, 5, 7. Column 2 is labeled y with entries negative 6, 2, 18, 26.
Data Set B
A 2-column table with 4 rows. Column 1 is labeled x with entries negative 5, negative 2, 0, 6. Column 2 is labeled y with entries negative 1, 2, 4, 10.

Which equations could Verdita use to represent the data sets?
Data Set A: y = 4 x minus 2
Data Set B: y = x + 4
Data Set A: y = 4 x minus 2
Data Set B: y = x minus 4
Data Set A: y = 4 x + 2
Data Set B: y = x minus 4
Data Set A: y = 4 x + 2
Data Set B: y = x + 4

Answers

Answer:

The answer to this question would be A Data Set A: y = 4x - 2 Data Set B: y = x + 4

Answer:

your answer is A

Step-by-step explanation:

i took the test lol

Janice is painting a portion of a gymnasium court. If Janice paints the shaded area, then how many square feet will she paint? It has 16ft and 40ft. How do I do this question?

Answers

Answer:439.04 ft2

Step-by-step explanation:

What is the sum of 12 – 5i and –3 + 4i?

Answers

Answer:

10i and 7i

Step-by-step explanation:

Step-by-step explanation:

(12-5i)+(-3+4i)

12-5i-3+4i

12-3-5i+4i

9-1i

Hope it helps

Matt drove 395 miles on 20 gallons of gas. If he has
enough money for 84 gallons of gas, how many miles
can he drive?

Answers

Answer:

I believe the answer is 1659

Step-by-step explanation:

395 ÷ 20 = 19.75

19.75 × 84 = 1659


The manager of a cafeteria kept track of the number of each type of lunch sold in October and made this table. Which graph
best correctly and completely represents the data in the table?

Answers

Answer:

The third one.

Step-by-step explanation:

The first graph says each square is 10 lunches, but there are only 3 squares for the deli sandwich. That's 30 deli sandwiches in total but there were 300 in the table so the first one is wrong. In the second one, it says that 2 types of lunches were sold up to 300 times, but in the table, only 1 was. The last graph says that there were 300 pizzas sold, but the table said there were 650, so that one is wrong.

Process of elimination leaves you with the third graph as the correct answer.

Will give brainly to whoever actually answers
Please please help me

Which of the following are true about essential questions?
An essential question helps to guide the research.

An essential question uses information to answer an evidence-based claim.

An essential question should be clear and of interest to the writer.

An essential question is developed into a thesis statement.

Answers

An essential question should be clear and of interest to the writer

what is x if 0 divded by x is 0

Answers

Answer:

its just 0, you cant really have an equation if it's just 0's, like

0+0= 0

Answer:

Undefined

Step-by-step explanation:

Brian had 42 class fare tickets to sell he sold 5/6 of the tickets. How many tickets did Brian and sell.​

Answers

Answer:

35

Step-by-step explanation:

Ayudaaaaaaaaaaaaaaaaaa aaa aaa aaa Doy corona

Answers

Answer:

The IQR describes the middle 50% of values when ordered from lowest to highest. To find the interquartile range (IQR), ​first find the median (middle value) of the lower and upper half of the data. These values are quartile 1 (Q1) and quartile 3 (Q3). The IQR is the difference between Q3 and Q1.

Step-by-step explanation:

The volume of a rectangular prism is 72 in3. If the height is 6 inches and the width is 3 inches, what is the length?​

Answers

Answer:

4

Step-by-step explanation:

Volume= length*width*height

72=Length*3*6

72=Length*18

divide by 18 both sides to get Length=4 inches

The perimeter of a triangular playground is 55 feet. The lengths of two sides are 9 feet and 26 feet. How long is the third side?

Answers

Answer:

20 feet

Step-by-step explanation:

9+26=35

55-35=20

The third side is 20 feet

wat was the greatest number of gold coins that a scavenger collected

Answers

Answer: 9

Step-by-step explanation:


help plzzz someone solve it i need help

Answers

19° hope this helped!
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