The owners of the Syfy channel are interested in whether watching the Syfy channel causes people to become "geeky," and if so, whether any such effects depend on a person's gender.They hire a researcher to design and carry out the appropriate study.The researcher randomly assigns an equal number of men and women to watch 0, 3, 5, or 9 hours of the Syfy channel each week for 6 weeks.What is the null hypothesis for the main effect of hours watched?
A) On average, men and women are equally geeky.
B) On average, men are geekier than women.
C) On average, watchers are equally geeky regardless of the hours of the Syfy channel they watch.
D) On average, men are geekier than women when watching fewer hours but less geeky than women when watching more hours of the Syfy channel.

Question

Quizplus · Accepted Answer

The null hypothesis for the main effect of hours watched is that there is no difference in "geekiness" among people who watch 0, 3, 5, or 9 hours of the Syfy channel. This is because the study is interested in determining whether watching the Syfy channel causes people to become "geeky," without making any assumptions about how many hours are needed to produce this effect, or whether men and women differ in their response to the channel. Therefore, the null hypothesis is that there is no relationship between the number of hours of Syfy viewing and the level of geekiness that a person displays.

The Owners of the Syfy Channel Are Interested in Whether