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Please help with a practice question with no solution Suppose that Y 1 , Y 2 , . . . , Y n are independent
Please help with a practice question with no solution
Suppose that Y1,Y2,...,Yn are independent N(5,) random variable, where >0.
(a) Find the Cramr-Rao lower bound for unbiased estimators of
(b) Given thatVar((Yi5)2)=22 show that
n(Yi5)2+(Y25)2+...+(Yn5)2
is an unbiased estimator of of smallest variance.
Thank you!
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