62. Formal analogy with the model of Problem 61 suggests the mixed model X; jk = P. + a i + Bj + Cij + ii, with the B's, C's, and U's as in Problem 61. Reduce this model to a canonical form involving X... and the sums of squares L(X;..- X.••- a;)2 nai + a2 LL(X;j'- X; ..- X.j.+ x..l nai + a2 L L( X.j . - x..l ano] + nai + a2 ' L L L( X;jk - X; ..- X.j.+ x..l a2