Question

If p(a) = 0.35, p(b) = 0.45, and p(a and
b.= 0.25, then p(a|b) is:

Answer 1

Definition of conditional probability:


`\mathbb P(A\mid B)=(\mathbb P(A\cap B))/(\mathbb P(B))`

Thus


`\mathbb P(A\mid B)=(0.25)/(0.45)\approx0.56`