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An Estimator μ^Y\hat { \mu } _ { Y } Of the Population Value

Question 22

Multiple Choice

An estimator μ^Y\hat { \mu } _ { Y } of the population value μY\mu _ { Y } is unbiased if


A) μ^y=μy\hat { \mu } _ { y } = \mu _ { y }
B) Yˉ\bar { Y } has the smallest variance of all estimators.
C) Yˉpμy\bar { Y } \stackrel { p } { \rightarrow } \mu _ { y }
D) E(μ^Y) =μYE \left( \hat { \mu } _ { Y } \right) = \mu _ { Y }

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