1. Consider the model Y = X'Bo + E s.t. B E B = {B: RB =r} E(EX)=0. Let @CLS denote the constrained least squares estimator. Suppose that {Y;, X;}}_1 are iid, X; e Rk, r e Ra, rank(X'X) = k, rank(R) = 9, E|Y|2