Asked by EKM

Given that P(A)=0.81 and P(B|A)=0.23, find the joint probability P(A and B):

Answers

Answered by Reiny
well ... know your definitions

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

.23 = P(A and B) / .81
P(A and B) = (.23)(.81) = ....
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