Question

If `P(A) = 0.7, P(B) = 0.9` and `P(A nn B)=.4`. What is `P(B|A)`? What about `P(A|B)`?

Answer 1

`P(B|A)= 4/7` and `P(A|B)= 4/9`

Explanation:

`P(B|A)=(P(A nn B))/(P(A))=(0.4)/(0.7)=4/7`
`P(A|B)=(P(A nn B))/(P(B))=(0.4)/(0.9)=4/9`