Linked to number 1 Question

Question 2 Not yet answered Marked out of 21.00 A given single blind clinical trials was executed to test the effect of placebo versus the medication metphormine taken by a sample of 15 diabetic patients at facility X in Belize during the period May 2014 to May 2015. The following was the results of each person's glucose level that took the placebo at the end of the study trial period. 98 mg/dL, 108 mg/dL, 142 mg/dL, 91 mg/dL, 121 mg/dL, 92 mg/dL, 128 mg/dL, 97 mg/dL, 145 mg/dL, 132 mg/dL, 119 mg/dL, 118 mg/dL, 106 mg/dL, 112 mg/dL, 132 mg/dL a. Calculate the mean, variance, standard deviation, coefficient variation, z-score for 103 mg/dL and 129 mg/dL and the glucose level for z-score value of 0.68 and -2.48. (21 pts)