For Exercises 7–10, assume that the samples were drawn independently and confirm that the other requirements for ANOVA are met by doing the following:

  1. Use technology to construct a probability plot for each group. Check for normality.
  2. Check for equal variances.

Question 12.10

10.

A B C D
5 8 3 6
2 7 7 4
4 10 5 5
1 6 4 3
3 9 6 7