P(A)= 0.20 P(B)= 0.25 P(A and B)= 0.10 What is P(B|A) ?

[匿名]

2019-03-18 10:14 pm

help APEX GEOMETRY

回答 (2)

胡雪8°

2019-03-18 10:34 pm

P(B|A)
= P(B and A) / P(A)
= P(A and B) / P(A)
= 0.10 / 0.20
= 0.50

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[匿名]

2019-03-18 10:27 pm

P(B|A) = P(A ∩ B) / P(A)

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