i) Let X be a random variable with the PDF f(x: 0) =e-(1-", 00, S(x; A, jµ) = { ^†" -e/", x<0, where A>0 and u> 0 are unknown parameters. Find (simple) sufficient statistics for (A, u) and determine the MLES (A, î) of (A. µ). Now suppose that n 1. Is A an unbiased estimator of A? Justify your answer.

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