In: Math
7. In a study to test the effects of science fiction movies on people's belief in the supernatural, seven people completed a measure of belief in the supernatural before and after watching a popular science fiction movie. Participants' scores are listed below with high scores indicating higher levels of belief. Using the .01 significance level, test the experimenter's assumption that the participants' belief in the supernatural would change after watching the movie.
Belief-in-Supernatural Scores Participant
Before | After | |
A | 6 | 7 |
B | 3 | 5 |
C | 6 | 6 |
D | 6 | 2 |
E | 1 | 9 |
F | 3 | 7 |
G | 2 | 3 |
After
A) What is the appropriate test for this data?
B) Conduct the appropriate hypothesis test by hand. Follow the five steps of hypothesis testing and provide a drawing.
C) Give an interpretation of this data and, when appropriate, report the statistics.
D) Explain how you found the characteristics of the comparison distribution. In your explanation, be sure to use the names of the concepts. For example, if you are calculating variance for the distribution of means call it that. Do not simply say “that number”.
Mbefore = 3.86
Mafter = 5.57
SSbefore= 26.86
SSafter = 35.71
Mdifference = 1.71
SSdifference = 102
Difference = After – before