[商管] [統計]-高應大97-金資所
4.
Assume Y1,Y2,Y3......Yn be a ramdom sample of size n from the
normal distribution N(μ,σ^2). We find that an unbiased estimator
for σ is α×S and an unbiased estimator for σ^2 is β×S^2 ,
where S= √ [Σ(Yi-Ybar)^2]
(a) What is the value of α?
(b) What is the value of β?
可以給我點提示嗎?或是教教我T_T
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◆ From: 118.171.46.162
※ 編輯: kavas 來自: 118.171.46.162 (04/07 11:11)
※ 編輯: kavas 來自: 118.171.46.162 (04/07 12:30)
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