回複：Wrong:P(a^bd^cd)=.336

來源: Jinjing 於 2010-01-30 07:51:42 [] [舊帖] [給我悄悄話] 閱讀數 : (141 bytes)
回答: Reply to Jinjing on question 3 由 endofsuburbia 於 2010-01-29 21:19:35

P(a^bd^cd)=.35*.3+(.3*.5+.7*.5)*(.3/(1-.35))=.336 wrong.
It should be:P(a^bd^cd)=.35*.3+.3*(.15/(1-.35))+.5(.3/(1-.35))=.405

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• 回複You're right,I'm going down. -Jinjing- ♀ 給 Jinjing 發送悄悄話 (85 bytes) () 01/30/2010 postreply 09:54:42

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