A story describing a date rape was read by 352 high school s

A story describing a date rape was read by 352 high school students. To investigate the effect of the victim?s clothing on subject?s judgment of the situation described, the story was accompanied by either a photograph of the victim dressed provocatively, a photo of the victim dressed conservatively, or no picture. Each student was asked whether the situation described in the story was one of rape. Data from an article are given in the accompanying table. Is there evidence that the proportion who believe that the story described a rape differs for the three different photo groups? Test the relevant hypotheses using a = .01. (Use 2 decimal places.) The data the conclusion that the proportion who believe the story describes a rape is not the same for the three photo groups.

Solution

For calculating chi square, prepare contingency table.

chi-square = 28.6
degrees of freedom = 2
probability = 0.000

p<0.001 is the answer