A medical researcher wishes to try three different techniques to lower blood pressure of patients with high blood pressure. The subjects are randomly selected and assigned to one of three groups. Group 1 is given medication, Group 2 is given an exercise program, and Group 3 is assigned a diet program. At the end of six weeks, each subject's blood pressure is recorded. Find the test statistic F to test the claim that there is no difference among the means. State your hypothesis, draw your curves, label your critical values and your test statistic, state your decision to accept or reject and prepare your conclusion in the language of the problem. Use a=0.05.
Group 1 Group 2 Group 3
11 8 8
12 3 12
9 5 4
15 2 4
13 4 9
8 0 6