Question

Provide an appropriate response. 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 critical value Foto test the claim that there is no difference among the means. Use a = 0.05. ANOVA Group 1 Group 2 Group 3 11 S 8 12 3 12 13 2. 4 15 5 4 9 4 9 8 0 6 19.43 39.43 3.68 4.77 Next

Answer 1

To calculate Fo critical value we need degrees of freedom(DF)

between the group DF= k-1, where k is number of group

k-1 = 3 -1 = 2

Within the group DF = N-k, where N is total number of subjects

N-k = 18 - 3 = 15

Level of significance is 0.05

Fo = F (2, 15) = 3.6823

And hence,

Ans. 3.68