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- UID
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- 250
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- 2011-7-2
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- 2014-6-28
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You’re right. With the formula I had confused the conditional probability with the joint prob. so there was no need to multiply again by 75% because the 30% was already 75% times 40%. With the tree it’s easier not to get confused.
Thanks. |
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发表于 2013-4-8 21:48
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