Pick one of the following. Please show your steps and calculator keystrokes. A. Effectiveness of Diet. (TTest) Forty subjects followed the Weight Watchers diet for a year. Their weight changes are summarized by these statistics: x = -6.6 lb, s = 10.8 lb (From Journal of the American Medical Association, Vol. 293, No. 1) - Use a 0.01 significance level to test the claim that the diet has no effect. Based on the results, does the diet appear to be effective? B. Blanking out on Tests. (2SampTtest) The arrangement of test items was studied for its effect on anxiety. Sample values consisting of measures of "debilitating test anxiety" (which most of us call panic or blanking out) are obtained for a group of subjects with test questions arranged fro easy to difficult, and another group with test quetions aranged from difficult to easy. Below are the summary statistics (from Journal of Experimental Education, Vol. 52, No. 4). Test the claim that the two samples come from populations with the same mean. EasyToDifficult DifficultToEasy group group n 25 16 27.115 31.728 47.020 18.150