1. (25 Points) Let X1, X2, X, be a random sample from a normal distribution N(0,0) with mean 0 and variance 0, where 0<<co. The N(0,0) pdf is given by 1 f(x;0)= √20 /2π0 (a). What is the sufficient statistic for 6? (b). Find the MLE & of 0. (c). Is the MLE an unbiased estimator of 0? Why? (d). Is the MLE a consistent estimator of 0? Why? (e). Is the MLE é an efficient estimator of 0? Why?