If X1, X2, , Xn constitute a random sample from a population with the mean , what condition must be imposed on the constants a1, a2, , an so that a1X1 a2X2 anXn is an unbiased estimator of

Question: If X1, X2, . . . , Xn constitute a random sample from a population with the mean , what condition must be imposed on

If X1, X2, . . . , Xn constitute a random sample from a population with the mean µ, what condition must be imposed on the constants a1, a2, . . . , an so that a1X1 + a2X2 + · · · + anXn is an unbiased estimator of µ?

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