2. Suppose that X1,X2,,Xn is a random sample from the N(,1). (a). Find the CRLB for variances of
unbiased estimators of . (b). Find the M.L.E. ^ of . (c). Is ^ in (b) a UMVU estimator of ?.
2 Suppose that X1X2Xn is a random sample from the N1.pdf
1. 2. Suppose that X1,X2,,Xn is a random sample from the N(,1). (a). Find the CRLB for variances of
unbiased estimators of . (b). Find the M.L.E. ^ of . (c). Is ^ in (b) a UMVU estimator of ?