Both before and after seeing a movie designed to reduce sexism,five males responded to a symbolic sexism questionnaire. Thisquestionaire measured covert sexist attitudes (moe subtle ones).The symbolic sexism questions were included in a large battery ofpersonality questions that were completed one week before and afterseeing the movie. Hence, it was unlikely that any participant wouldhave guessed the researcher's hypothesis. High scores reflectgreater sexism.
Before After
35 32
40 35
47 46
68 50
78 36
a. State the null hypothesis using symbols
b. Compute the appropriate test statistic, showing all of yourcomputations.
c. For this analysis, the cutoff = + - 2.776. Can you reject thenull hypothesis? Explain your response.
d. Draw the comparison (null) distribution and indicate valuesat 3 levels (data, t-values, probabilities).
e. Write out the statistic as if you were reporting this in ajournal article.
f. Compute the 95% confidence interval. Hint: use the t valuesprovided above.
