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1) True or False: The McNemar test used to determine

Question : 1) True or False: The McNemar test used to determine : 1403635

 

1) True or False: The McNemar test is used to determine whether there is evidence of a difference between the proportions of two related samples.

2) True or False: To test whether one proportion is higher than the other in two related samples, you can use the Marascuilo procedure.

3) True or False: To test whether one proportion is higher than the other in two related samples, you can use the McNemar test.

4) True or False: The McNemar test is approximately distributed as a Student's t.

5) True or False: The McNemar test is approximately distributed as a standardized normal random variable.

TABLE 12-18

 

The director of transportation of a large company is interested in the usage of the company's van pool program. She surveyed 129 of her employees on the usage of the program before and after a campaign to convince her employees to use the service and obtained the following:

 

 

She will use this information to perform a test using a level of significance of 0.05.

6) Referring to Table 12-18, the director now wants to know if the proportion of employees who use the service before the campaign and the proportion of employees who use the service after the campaign are the same. Which test should she use?

A) χ2 test for difference in proportions

B) Z test for difference in proportions

C) McNemar test for difference in proportions

D) Wilcoxon rank sum test

7) Referring to Table 12-18, the director now wants to know if the proportion of employees who use the service before the campaign and the proportion of employees who use the service after the campaign are the same. What is the value of the test statistic using a 5% level of significance?

8) Referring to Table 12-18, the director now wants to know if the proportion of employees who use the service before the campaign and the proportion of employees who use the service after the campaign are the same. What is the p-value of the test statistic using a 5% level of significance?

9) True or False: Referring to Table 12-18, the director now wants to know if the proportion of employees who use the service before the campaign and the proportion of employees who use the service after the campaign are the same. She should reject the null hypothesis using a 5% level of significance.

10) Referring to Table 12-18, the director now wants to know if the proportion of employees who use the service before the campaign and the proportion of employees who use the service after the campaign are the same. What should be her conclusion?

A) There is sufficient evidence that the proportion of employees who use the service before the campaign is the same as the proportion of employees who use the service after the campaign.

B) There is insufficient evidence that the proportion of employees who use the service before the campaign is the same as the proportion of employees who use the service after the campaign.

C) There is sufficient evidence that the proportion of employees who use the service before the campaign is not the same as the proportion of employees who use the service after the campaign.

D) There is insufficient evidence that the proportion of employees who use the service before the campaign is not the same as the proportion of employees who use the service after the campaign.

TABLE 12-19

 

The director of the MBA program of a state university wanted to know if a one-week orientation would change the proportion among potential incoming students who would perceive the program as being good. Given below is the result from 215 students' view of the program before and after the orientation.

11) Referring to Table 12-19, which test should she use?

A) χ2 test for difference in proportions

B) Z test for difference in proportions

C) McNemar test for difference in proportions

D) Wilcoxon rank sum test

12) Referring to Table 12-19, what is the value of the test statistic using a 1% level of significance?

13) Referring to Table 12-19, what is the p-value of the test statistic using a 5% level of significance?

14) True or False: Referring to Table 12-19, the director should reject the null hypothesis using a 1% level of significance.

15) True or False: Referring to Table 12-19, what should be the director's conclusion?

A) There is sufficient evidence that the proportion of potential incoming students who perceive the program as being good is the same before and after the orientation.

B) There is insufficient evidence that the proportion of potential incoming students who perceive the program as being good is the same before and after the orientation.

C) There is sufficient evidence that the proportion of potential incoming students who perceive the program as being good is not the same before and after the orientation.

D) There is insufficient evidence that the proportion of potential incoming students who perceive the program as being good is not the same before and after the orientation.

 

 

 

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