21.Here are data from an experiment studying the effect of age on creativity scores:

Age 4 Age 6 Age 8 Age 10 3

9 9

1 5

11 12 1

7 14 9

6 4

10 8

4 3

10 9

5

(a) Compute and create an ANOVA summary table,

(b) With a = .05, what do you conclude about

(c) Perform the appropriate post hoc comparisons. What should you conclude about this relationship?

(d) Statistically, how impor¬ tant is the relationship in this study?

(e) Describe how you would graph these results.