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Among All Unbiased Estimators That Are Weighted Averages of Y1 Yˉ\bar { Y }

Question 7

Multiple Choice

Among all unbiased estimators that are weighted averages of Y1,..., Yn Yˉ\bar { Y } , is


A) the only consistent estimator of µY.
B) the most efficient estimator of µY.
C) a number which, by definition, cannot have a variance.
D) the most unbiased estimator of µY.

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