Question: 2. Let Y1, 2,... Y be a sample from the Normal(, ) distribution. Let 2 = 1 2(n 1) - n (Yi - Y)

2. Let Y1, 2,... Y be a sample from the Normal(, )

2. Let Y1, 2,... Y be a sample from the Normal(, ) distribution. Let 2 = 1 2(n 1) - n (Yi - Y) i=2 Find whether is a unbiased estimator for .

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