Let y 1 , y 2 , y 3 be a random sample from an exponential distribution

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Let y1, y2, y3 be a random sample from an exponential distribution with mean θ, i.e., E (yi) = θ, i = 1, 2, 3. Consider three estimators of θ:

a. Show that all three estimators are unbiased. 

b. Which of the estimators has the smallest variance? Recall that, for an exponential distribution, V(yi) = θ2.

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Statistics For Engineering And The Sciences

ISBN: 9781498728850

6th Edition

Authors: William M. Mendenhall, Terry L. Sincich

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