Question

Events E1 and E2 form a partition of the sample space S. A is any event that P(E1) = P(E2) = $\frac{1}{2}$, P(E2/A) = $\frac{1}{2}$ and P(A/E2) = $\frac{2}{3}$, then P(E1/A) is

• A. $\frac{1}{2}$
• B. $\frac{2}{3}$
• C. 1
• D. $\frac{1}{4}$

Answer 1

Answer: (A)

$\frac{1}{2}$

Answer 2

The correct answer is (A) : $\frac{1}{2}$.