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Oral 1-Let X1, X2, .... An be a random sample from a normal population from a normal population N(u, 1). Show that T = -

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Oral 1-Let X1, X2, .... An be a random sample from a normal population from a normal population N(u, 1). Show that T = - En, X2 is an unbiased estimator of uz + 1 (4 marks)

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