Does cablevideo-on-demand (VOD) increase adeffectiveness? A study compared general TV and VOD audiences after viewing a brand ad. Whether the viewer indicated that the ad made them want to visit the brand website was collected and organized in the accompanying table. Complete parts(a) through(c) below.

1 Click the icon to view the table of ad effectiveness for TV and VOD audiences.

a. Set up null and alternative hypotheses to try to determine whether there is a difference in ad impact between general TV viewing and VOD viewing.

Let group 1 be the general TVaudience, and let group 2 be the VOD audience. State the null and alternative hypotheses. Choose the correct answer below.

A.

H0: 1=2

H1: 12

B.

H0: 1>2

H1: 12

C.

H0: 1<2

H1: 12

D.

H0: 12

H1: 1<2

E.

H0: 12

H1: 1>2

F.

H0: 12

H1: 1=2

b. Conduct the hypothesis test defined in(a), using the 0.05 level of significance.

Calculate the test statistic.

2STAT=

(Round to three decimal places asneeded.)

Determine the critical value.

Thep-value is

(Round to three decimal places asneeded.)

State the conclusion.

(1) the null hypothesis. There is (2) evidence at the 0.05 level of significance to conclude that there is a difference in ad impact between general TV viewing and VOD viewing.

c. An earlierZ-test for the difference between two proportions in part(a) and(b) using the hypotheses H0: 12 and H1: 1<2 resulted in a test statistic of ZSTAT=9.38, with ap-value of 0.000. Compare the results of(a) and(b) to the results of theZ-test. Choose the correct answer below.

A. Both tests agree that the null hypothesis should notbe rejected.

B. Thechi-square test concluded that the null hypothesis should not berejected, while theZ-test concluded that the null hypothesis should be rejected.

C. Thechi-square test concluded that the null hypothesis should berejected, while theZ-test concluded that the null hypothesis should not be rejected.

D. Both tests agree that the null hypothesis should be rejected.

E. The tests cannot be compared since theZ-test was aone-tail test, while thechi-square test was atwo-tail test.

1: TV vs. VOD Ad Effectiveness

Made Me Want to Visit the Brand Website

Viewing Audience Yes No

General TV 32 160

Video on Demand 150 95

(1)Do not reject

Reject

(2)sufficient

insufficient