It would be possible to calculate a one-way chi-square test on the data in row 2 of the table in Exercise 6.12. What hypothesis would you be testing if you did that? How would that hypothesis differ...

It would be possible to calculate a one-way chi-square test on the data in row 2 of the table in Exercise 6.12. What hypothesis would you be testing if you did that? How would that hypothesis differ from the one you tested in Exercise 6.12?

Suppose we asked a group participants whether they liked Monday Night Football, made them watch a game, and then asked them again. Our interest lies in whether watching a game changes people’s opinions. Out of 80 participants, 20 changed their opinion from Favorable to Unfavorable, while 5 changed from Unfavorable to Favorable. (The others did not change). Did watching the game have a systematic effect on opinion change? (This test on changes is a test suggested by McNemar [1969] and is often referred to as the McNemar test.)

a. Run the test.

b. Explain how this tests the null hypothesis that you wanted to test.

c. In this situation the test does not answer our question of whether watching football has a serious effect on opinion change. Why not?