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4. Consider a random sample of size n from a Poisson distribution, X, ~ POI(u) . (a) Find the CRLB for the variances of unbiased

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4. Consider a random sample of size n from a Poisson distribution, X, ~ POI(u) . (a) Find the CRLB for the variances of unbiased estimators of / . (b) Find the CRLB for the variances of unbiased estimators of 0 = e-". (c) Find the MLE 0 of 0. (d) Is @ an unbiased estimator of 0

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