Question: Problem 3 Let X X2 X7 denote idenpendent random samples from a population having 10 mean and variance o Consider the following estimators of 1

Problem 3 Let X X2 X7 denote idenpendent random samples from

Problem 3 Let X X2 X7 denote idenpendent random samples from a population having 10 mean and variance o Consider the following estimators of 1 Is either estimator unbiased Which estimator is better In what sense is better Hint Can you compare the variance of both estimators X X X7 7 2X X6 X 2

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