Log in
Economics
1
answer
0
watching
323
views

Consider a population of five families with the following data representing the number of pets in each family.

 

Family

Number of Pets

  
 

A

2

  
 

B

6

  
 

C

4

  
 

D

3

  
 

E

1

  

How many possible samples of size 2 can be drawn?

Write each of the possible samples and then determine the mean of each sample.

Determine the mean and the standard deviation of the population.

For the distribution of sample mean values, provide the mean and the standard error of the mean.

Watch
1
answer
0
watching
323
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Chika Ilonah
Chika IlonahLv10
28 Sep 2019

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share

Related textbook solutions

Principles of Economics
2nd Edition, 2017
Openstax
ISBN: 9781947172364
Principles of Macroeconomics
2 Edition,
Openstax
ISBN: 9781947172388
Principles of Microeconomics
2 Edition,
Openstax
ISBN: 9781947172340

Related questions

3) Let's say you have a professor who gives 6 tests in the fall semester. You received these percentages: 79, 64, 84, 82, 92, and 77. This professor has decided that he will randomly select two grades instead of averaging all of the original scores. Your final grade will be based on the average of these two exams.

a) How many different samples of the two exam grades are possible?

b) List all possible samples of size two and compute the sum and mean of each.

c) Find the mean of the sample means and compare it to the population mean.

d) As the student, do you think this is a good arrangement? Explain.

9.

value:
10.00 points

A population consists of the following five values: 9, 11, 12, 14, and 18.
a.

List all samples of size 3, and compute the mean of each sample. (Round your mean value to 2 decimal places.)
Sample

Values Sum Mean
1 (Click to select)9, 11, 129, 12, 149, 12, 189, 14, 18
2 (Click to select)9, 11, 149, 11, 129, 11, 189, 12, 14
3 (Click to select)9, 11, 189, 11, 129, 11, 149, 12, 14
4 (Click to select)9, 12, 1411, 12, 149, 11, 1411, 14, 18
5 (Click to select)9, 12, 189, 11, 129, 11, 149, 11, 18
6 (Click to select)9, 14, 189, 11, 129, 11, 149, 11, 18
7 (Click to select)11, 12, 149, 11, 1211, 9, 149, 11, 18
8 (Click to select)11, 12, 1811, 12, 1411, 12, 911, 9, 12
9 (Click to select)11, 14, 1811, 14, 1211, 9, 1411, 9, 12
10 (Click to select)12, 14, 1812, 14, 912, 14, 1112, 9, 14
For the question above please give me the Sum , Mean for each row starting with 1 through 10. ____ ______
b.

Compute the mean of the distribution of sample means and the population mean. (Round your answers to 2 decimal places.)
Sample means________
Population mean_______

One of the major measures of the quality of service provided by any organization is the speed with which it responds to customer complaints. A large family-held department store selling furniture and flooring had undergone a major expansion in the past several years. In particular, the flooring department had expanded from 2 installation crews to an installation supervisor, a measurer, and 15 installation crews. The store had the business objective of improving its response to complaints. The variable of interest was defined as the number of days between when a complaint was made and when it was resolved. Prior to increasing the staff, the mean number of days to resolve a complaint was 45. Data were collected from 50 complaints that were made in the past year. The sample data showed the mean number of days for resolution was 40 with a standard deviation of 18 days. Perform the appropriate test to determine if the mean number of days it takes to resolve a complaint decreased after the staff was increased. Use alpha = .05.............b. In addition to reducing the time it takes to resolve a complaint, the store also wanted to decrease the percent of flooring jobs that resulted in a customer complaint. Before expanding the crew, the percentage of flooring jobs resulting in a customer complaint was 8%. In a sample of 225 flooring jobs, 15 resulted in a customer complaint. Is there evidence the percentage of jobs with customer complaints decreased as well? Perform the test at alpha = .05

And what is the decision rule for each part?

Weekly leaderboard

Home
Homework Help 3,900,000
Economics 400,000
Start filling in the gaps now
Log in