a. Develop a general Hasse diagram for a split- plot design with the following characteristics:
• Whole- plot factor A has a levels (i = 1, 2, c, a).
• Split- plot factor B has b levels (j = 1, 2, c, b).
• Within each whole- plot factor, c whole- plot units are selected (k = 1, 2, c, c).
• Within each AB factor- level combination, d subplot units are selected (m = 1, 2, c, d).
b. Write out a statistical model similar to Equation (5.2) or (5.3) for this general design.