11. 10% Suppose the score of statistics quiz is normally distributed with mean 70 and variance 100 Sample 5 statistics quiz scores and calculate

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11. 10% Suppose the score of statistics quiz is normally distributed with mean 70 and variance 100 Sample 5 statistics quiz scores and calculate of the following three statistics 3 _ X + X + X + X + X, X-0.2x, +0.3x, +0.2X, +0.2X, +0.1X,,M-median 5 A Among these three estimator, which one is relatively efficient? Why? B. Show the X is the BLUE (best linear unbiased estimator).