A) 0.28
B) 0.32
C) 0.38
D) None of the above
Correct Answer: C
Solution :
[c] \[\because P(\bar{B})=0.8\Rightarrow P(B)=0.2\] \[P(A\cup B)=0.5\And P(A|B)=0.4\] \[\because P(A\cap B)=P(B)\times P(A|B)=0.2\times 0.4=0.08\] \[\And P(A)=P(A\cup B)-P(B)+P(A\cap B)\] \[P(A)=0.5-0.2+0.08=0.38\]You need to login to perform this action.
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