推 LITTLEN:simultaneous CI and Martingale? 04/12 14:14
[問題1]
_
Suppose that 25 measurements of certain data yield sample mean X
and sample variance s^2 .Assuming that the sample is from a N(μ,σ^2 )
population,find a level (1-α)confidence region for (μ,σ)
[問題2]
consider an urn that initially contains one red ball and one black ball.
At each time n=1,2…,a ball is drawn, and it and another two balls of the
same color are placed back into the urn.Thus,after n draws the urn contains
2n+2 balls. LetYn be the number of balck in the urn after n draws and
let Xn=Yn/(2n+2)
Prove the identity E(Xn+1|Xn=x)=x ,n=1,2…
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有人可以幫我解答一下嗎
感謝~~
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※ 編輯: brucejune 來自: 218.174.196.10 (04/12 13:00)
※ 編輯: brucejune 來自: 218.174.196.10 (04/12 13:01)