Let p denote the proportion of individuals in a population who possess a specified property, and X denote the number of individuals in the sample who possess the same property. The estimator $\hat { p } = X / n$ is __________ if $E ( \hat { p } ) = p$ and its standard deviation $\sigma _ { \bar {P} }$ = __________.

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The Answer of Let p denote the proportion of individuals in a population who possess a specified property, and X denote the number of individuals in the sample who possess the same property. The estimator $\hat { p } = X / n$ is __________ if $E ( \hat { p } ) = p$ and its standard deviation $\sigma _ { \bar {P} }$ = __________.

Let P Denote the Proportion of Individuals in a Population p^=X/n\hat { p } = X / np^​=X/n

Let P Denote the Proportion of Individuals in a Population $\hat { p } = X / n$