A senior analyst working for Ameritrade has reviewed purchases his customers have made over the last six months. He has categorized the mutual funds purchased into eight categories: (1) Aggressive Growth (AG), (2) Growth (G), (3) Growth-Income (G-I), (4) Income Funds (IF), (5) International (I), (6) Asset Allocation (AA), (7) Precious Metal (PM), and (8) Bond (B). The percentage gains accrued by 3 randomly selected customers in each group are as follows:

a. Develop the appropriate ANOVA table to determine if there is a difference in the average percentage gains accrued by his customers among the mutual fund types. Use a significance level of 0.05.
b. Use the Tukey-Kramer procedure to determine which mutual fund type has the highest average percentage gain. Use an experiment-wide error rate of 0.05.