Modify the R code in Section 8.2.1 to create

(a) A randomized list for a split-plot experiment with completely random-

ized whole plots where there is one whole-plot factor A with 3 levels and two replicate whole plots for each level, and one split-plot fac-

tor B with three levels. Label the levels with c(1,2,3) rather than c=("low","mid","high") as shown in Section 8.2.1.

(b) Write the model for the design you created in (a).

(c) Create a randomized list for a split-plot experiment with completely ran-

domized whole plots where there are two whole-plot factors A and B each with two levels and two replicate whole plots per treatment combination and two split-plot treatments C and D each with three levels.

(d) Write the model for the design you created in (c).