7) A psychologist studying addiction tests whether cravings for cocaine and relapse are independent. The following table lists the observed frequencies in the small sample of people who use drugs.

Relapse Obs. Freq. Yes No Cravings Yes 22 10 32 No 8 17 25 30 27 N = 57 (a) Conduct a chi-square test for independence at a 0.05 level of significance. (Round your answer to two decimal places.) 2 Xobt =