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8.1.22 Suppose that (x1, . . . , x) is a sample from a Gamma(ag, [1'] distribution, where (10 is known and [1' > 0

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8.1.22 Suppose that (x1, . . . , x\") is a sample from a Gamma(ag, [1'] distribution, where (10 is known and [1' > 0 is unknown. Determine the information lower bound for the estimation of [31 using unbiased estimators, and determine if the UMVU estimator obtained in Exercise 8.1.7 attains this

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