An Estimator $\hat { \mu }_y$ Of the Population Value $\mu_y$ Is Unbiased If
A)

Multiple Choice

An estimator $\hat { \mu }_y$ of the population value $\mu_y$ is unbiased if

A) $\hat { \mu }_y$ ₌ $\mu_y$
B) $\bar { Y }$ has the smallest variance of all estimators.
C) $\bar { Y } \stackrel { p } { \longrightarrow } \mu _ { Y }$
D) E( $\hat { \mu }_y$ ) = $\mu_y$