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Review on estimators. Let Y : (l'g) be a random sample from the normal distribution N01, 22), Where the expected value of the normal distribution

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Review on estimators. Let Y : (l'g) be a random sample from the normal distribution N01, 22), Where the expected value of the normal distribution ,u E R is unknown, and the variance parameter has four (4) as a value. We examine the following parameter p estimator 1 A Y = i M) 4 Calculate the bias of the estimator MY). Is the estimator unbiased? Calculate the variance and the mean squared error (MSE) of the estimator. (H+n+n+3

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