#2. (5.1.4 modified) Let X1, ..., Xn be a sample of iid N(0,0) random variables with 0 > 0. (0 should be the variance of Xk. ) Determine a) the MLE 0 of 0. b) E(0) and V(0). c) the MLE of SD(Xi) = VO. (Hint: There is almost no work to do. )