5.5.6. Let Y1, Y2, ..., Yn be a random sample of size n from the pdf 1 fy(y; 0) = = (r-1)!0 'e¯y/o, y >0 ê (a) Show that = Y is an unbiased estimator for 0. (b) Show that for 0. = ¼Y is a minimum-variance estimator
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