(Answered) Consider the random sample described in problem 982 of our

Statistics

Consider the random sample described in problem 9.82 of our text. Consider the statistic U= (1/n) ? Y' . a. Show that U is an unbiased estimator of b. Show that U is a consistent estimator of 0. [ You need not calculate Var Y), just note that it must be finite ] c. Show that U is an efficient estimator of ? . d. Show that U is a sufficient statistic for

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