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一个英文数学题The conditional probability of B given A is denoted s

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一个英文数学题
The conditional probability of B given A is denoted symbolically by P(B/A).If P(B/A)=P(B),then the events A and B are
A.dependent
B.independent
C.mutually inclusive
D.division
一个英文数学题The conditional probability of B given A is denoted s
P(B|A)=P(AB)/P(A)
If P(B/A)=P(B),then P(B)=P(AB)/P(A)
i.e.P(AB)=P(A)*P(B)
so A and B are independent.
选B
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