Garcia and Ybarra XXXXXXXXXXdescribe an experiment in which 174 undergraduates were randomly divided into a people-accounting condition (describing a numerical imbalance in an award) and a control...

Garcia and Ybarra (2007) describe an experiment in which 174 undergraduates were randomly divided into a people-accounting condition (describing a numerical imbalance in an award) and a control condition. A situation was described to them, and they made a choice that could either add to or detract from the imbalance. Of the undergraduates in the control condition, 34% made a choice that detracted from the imbalance. Of those in the people-accounting condition, 55% made a choice that detracted from the imbalance. Is the difference in the two groups’ proportions greater than can be attributed to chance? (Assume there were 88 people in the control condition, and 86 in the people-accounting condition, and use α = 0:01.)