question_answer 3)

If P(A) = 0.8, P(B) = 0.5 and P(B/A) = 0.4, find       (i) P(A B)             (ii) P(A/B)          (iii) P(AB)  

Answer:

Given that P(A) = 0.8, P(B) = 0.5 and P(B/A) = 0.4       (i) P(B/A) =                   = 0.8 × 0.4 = 0.02       (ii) P(A/B) =       (iii)             = 0.8 + 0.5 ? 0.32             = 1.30 ? 0.32 = 0.98