Refer to Exercise 14.31. Suppose that the five pane designs were randomly selected from a population of pane designs for participation in the study.
a. Obtain the expected mean squares for all sources of variability.
b. Test all relevant sources of variability for significance. Use α = .05.
c. Compare the results obtained here to the results obtained in Exercise 14.31.
d. Does considering the pane design effects to be random effects seem more relevant than considering them to be fixed effects? Explain your answer.