Suppose that X1, . . . , Xn form a random sample from a normal distribution for

Question:

Suppose that X1, . . . , Xn form a random sample from a normal for which the mean is known and the variance is unknown. Construct an efficient estimator that is not identically equal to a constant, and determine the expectation and the variance of this estimator. Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...