Question: Consider a different example. The expression A D? 1:1 2 _ G : n is an estimator for the variance of the normal distribution with

Consider a different example. The expression A D? 1:1 2 _ G : n is an estimator for the variance of the normal distribution with mean equal to zero. The denominator is 11, not 11 -1, because the mean is known. Question 23: Is this estimator unbiased? - yes - no

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