P(c) = (1-y)*(1-x) = .45
P(b) = y * (1-x) * y / (1-(1-x)*(1-y)) = .20
P(a) = 1- P(c) - P(b) = .35
Am I missing sth?
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回复:回复:回复:C H A G E FROM 3)
-guest007-
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(146 bytes)
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02/06/2010 postreply
17:17:37
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回复:回复:回复:C H A G E FROM 3)
-Jinjing-
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02/07/2010 postreply
11:18:41