Question

According to the general equation for conditional probability, if P(AuB')=5/9 and P(B)=1/3, what is P(A|B')?

A. 1/6
B. 1/3
C. 5/6
D. 2/3

Answer 1

`P(B)=(1)/(3)`

`P(B')=1-(1)/(3)=(2)/(3)`

`P(A|B')=(P(A\cap B'))/(P(B'))=((5)/(9))/((2)/(3))=(5)/(6)`
The correct answer choice is C.