Show that choice of ci that minimizes variances to condition

Reference no: EM13146184

For a random sample of size n from a population of size N, consider the following as an estimate of mu: where the ci are fixed numbers. find a condition on the ci such that the estimate is unbiased. show that the choice of the ci that minimizes the variances of the estimate subject to this ondition is ci = 1/n where i=1,...,n.

Reference no: EM13146184

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