Given Pr(B) = 1/3, Pr(A|B) = 2/3 and Pr(A|B') = 3/7, determine: a) Pr(A∩B') = 2/7 b) Pr(A) = 3/7 c) Pr(B'|A) = ?
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Hey Fratricide. Hint: P(B'|A) = P(B' and A)/P(A) by definition of conditional probability.
So: (2/7)/(3/7) = 2/3?
Yes that's correct.
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