The power curves of Figures 10.5 and 10.6 can be used to obtain (type II error) for the F test in two-factor ANOVA. For fixed values of , the quantity is computed. Then the figure corresponding to is entered on the horizontal axis at the value the power is read on the vertical axis from the curve labeled , and .

a. For the corrosion experiment described in Exercise 2, find b when , and .

Repeat for , and .

b. By symmetry, what is b for the test of H0B versus HaB in Example 11.1 when , and s 5 .3?

b1 5 .3, b2 5 b3 5 b4 5 2.1