A medical researcher wants to try three different techniques to lower cholesterol levels. 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 cholesterol level is recorded.
|
Group 1
|
Group 2
|
Group 3
|
|
13
|
2
|
12
|
|
12
|
2
|
12
|
|
11
|
5
|
4
|
|
15
|
3
|
8
|
|
9
|
4
|
9
|
|
8
|
0
|
6
|
1. state the requirements that must be satisfied in order to use the one-way ANOVA procedure.
2. Find the critical F-value to test the hypothesis that there is no difference among the means. Use α = .05
3. Find the test F statistic to test the hypothesis that there is no difference among the means. Use α = 0.05.