answer with explanation

Four similar studies were conducted by different research groups examining the effects of alcohol on driving. In each study. the performance of subjects was evaluated while driving sober (no alcohol] and while driving after consuming Mo alcoholic beverages (with alcohol). Each subject was rated based on the condition under which they performed best Assuming that alcohol would impair driving they tested the null hypothesis that alcohol would have no effect on driving. Using a critical value of 3.841 for the X2 test, which of these would be found to be signicant? ' a. 8 no alcohol 4 with alcohol ' b.110 no alcohol 90 with alcohol " c. 6-3 no alcohol 40 with alcohol ' cl. all ofthe above ' e. none of the abov