Random samples were selected from three populations. The data obtained are shown below. Please note that the sample sizes are not equal.
Treatment 1
Treatment 2
Treatment 3
37
43
28
33
39
32
36
35
33
38
38
40
?
a.Compute the overall mean 
.b.At ? = .01 using the critical value and p-value approaches, test to see if there is a significant difference among the treatment means.
What will be an ideal response?
a. 36
b.
| Source of Variation | SS | df | MS | F | p-value | F critical |
| Between Groups | 120 | 2 | 60 | 8.71 | 0.0079 | 8.02 |
| Within Groups | 62 | 9 | 6.89 | |||
| Total | 182 | 11 |
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