Question: A two-factor experiment yielded the following data:
a. Determine if there is interaction between factor A and factor B. Use the p-value approach and a significance level of 0.05.
b. Given your findings in part a, determine any significant differences among the response means of the levels of factor A for level 1 of factor B.
c. Repeat part b at levels 2 and 3 of factor B, respectively.