Question: If X 1 ,X 2 , . . . , X n is a random sample from a distribution with pdf show that Y =

If X1,X2, . . . , Xn is a random sample from a distribution with pdf

f(x; 0) = { 303 (x+0)4 0 0

show that Y = 2 ‾X is an unbiased estimator of θ and determine its efficiency.

f(x; 0) = { 303 (x+0)4 0 0

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