Question

The probability of event A is x, and the probability of event B is y. If the two events are independent, which of these conditions must be true?

Answer 1

A. P(B|A) = y
B. P(A|B) = y
C. P(B|A) = x
D. P(A and B) = x + y
E. P(A and B) = x

P(A) y

Answer 2

If two events A and B are independent, then the probability of A occurring is unaffected by whether or not B has occurred. Therefore:
P(A|B) = P(A)
Can you now see which conditional probability choice is correct?