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 .

Question 12.27

27. ANOVA table from Exercise 19

12.1.27

: 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.