For Exercises 23–30, assume that the ANOVA assumptions are verified.
For the ANOVA table indicated in Exercises 23–28, test whether the population means differ, using the -value method and .
25. ANOVA table from Exercise 17
12.1.25
versus Not all the population means are equal.
Reject if the .
.
.
The is . Therefore we reject . There is evidence at level of significance that the population means are not all equal.