Ononot — Consider the Cramer-Rao Lower Bound (CRLB). If \hat{\theta}

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Inferential Statisticshard

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Consider the Cramer-Rao Lower Bound (CRLB). If $\hat{\theta}$ is an unbiased estimator for $\theta$ , then $Var(\hat{\theta}) \geq \frac{1}{I_n(\theta)}$ . If an estimator attains this bound, what property does it have?