Question

According to the general equation for conditional probability, if P(A n B') = 2/9 and P(B) = 1/3, what is P( A I B')?

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

Answer 1

B. 2/3

Explanation:

Formula:

`p\left( A|B\right) =(p\left( A\cap B\right) )/(p\left( B\right) )`

Then

`p\left( A|B\right) =((2)/(9) )/((1)/(3) ) =(2)/(9) * (3)/(1)=(6)/(9)=(2)/(3)`