11.45 The table gives data for a 3 x 3 factorial experiment, with two replications per treatment:

a. Perform an analysis of variance for the data, and present the results in an analysis of variance table.

b. What do we mean when we say that factors A and B interact?

c. Do the data provide sufficient evidence to indicate interaction between factors A and B? Test using = 0.05.

d. Find the approximate p-value for the test in part

c. e. What are the practical implications of your results in part c? Explain your results using a line graph similar to the one in Figure 11.9.