Maurice Tutor

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    Argosy University/ Phoniex University/
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Category > Management Posted 18 Jan 2018 My Price 5.00

estimation of the variance

This problem is concerned with the estimation of the variance of a normal distribution with unknown mean from a sample X1,..., Xn of . normal random variables. In answering the following questions, use the fact that (from Theorem B of Section 6.3)

and that the mean and variance of a chi-square random variable with r  are r and 2r, respectively.

a. Which of the following estimates is unbiased?

b. Which of the estimates given in part (a) has the smaller MSE?

c. For what value of ρ does have the minimal MSE?

Answers

Maurice Tutor
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Status NEW Posted 18 Jan 2018 07:01 PM My Price 5.00

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