Question: A researcher wishes to try three different techniques to lower blood pressure. Subjects are randomly assigned to three groups, as indicated in the table below. After four weeks, the reduction in each person's blood pressure is recorded. At "alpha" = 0.05, use ANOVA to test the claim that there is no difference among the means. If the null hypothesis is rejected, do NOT do the follow-up test to determine where differences may occur.
Medication Exercise Diet
10 11 10
12 10 13
14 9 15
12 11 15
12 13 16