117.设A、B两事件满足P(A)=0.8,P(B)=0.6,P(B|A)=0.

昕玥2020-05-20  27

问题 117.设A、B两事件满足P(A)=0.8,P(B)=0.6,P(B|A)=0.8,则P(A∪B)为( )。A.0.46B.0.56C.0.66D.0.76

选项

答案D

解析解题思路:P(A∪B)=P(A+B)=P(A)+P(B)-P(A)×P(B/A)=0.8+0.6-0.8×0.8=0.76
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