If P(A) = 0.7, P(B) = 0.3, and P(B | A) = 0.4 find P(A and B).?

[匿名]

2015-09-28 5:38 pm

回答 (2)

Marksix

2015-09-28 5:44 pm

✔ 最佳答案

P(B | A) = P(A and B) / P(A)
0.4 = P(A and B) / 0.7

Therefore,
P(A and B) = 0.28

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用戶57802

2015-09-28 5:43 pm

0.28

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