Question: Let x have the pdf f ( x ; ) = 1 e - x , x > 0 , > 0 with = and

Let x have the pdf
f(x;)=1e-x,x>0,>0
with = and 2=2. Consider a random sample of size 5;x1,x2,dots,x5 and let
Y1=x=15xi5 and Y2=x1+x25.
Find the mean square errors of Y1 and Y2. Which one is a better estimator? Why?
Let x have the pdf f(x;)=1e-x,x>0,>0 with = and 2=2. Consider

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