Reference no: EM132409148

A social psychologist is studying whether people are more likely to help a poor person or a rich person who they find lying on the floor. The three conditions all involve an elderly woman who falls down in a shopping mall ( when only one person at the time is near by). The independent variable concerns the apparent wealth of the woman; she is dressed to appear either poor, wealthy, or middle class, The reaction of each bystander is classified in one of the three ways: ignoring her, asking her if she is alright, and helping her to her feet. The data appear in the contingency table below:

Poor Middle Class Wealthy

Ignores 16 10 7

Talks to her 8 6 5

Helps her up 6 14 18

a. Test null hypothesis at .01 level? Is there evidence for an association between the apparent wealth of the victim and the amount of help provided by a bystander?

b. Calculate Cramer's phi for these data. What can you say about the strength of the relationship between the two variables?