Suppose that the probability of event A is 0.2 and the probability of event B is 0.4. Also, suppose that the two events are independent. Then P(A|B) is:Question 16Select one:a.P(A)/P(B) = 0.2/0.4 = ½b.None of the above.c.P(A) = 0.2d.P(A) × P(B) = (0.2)(0.4) = 0.08
Question
Suppose that the probability of event A is 0.2 and the probability of event B is 0.4. Also, suppose that the two events are independent. Then P(A|B) is:Question 16Select one:a.P(A)/P(B) = 0.2/0.4 = ½b.None of the above.c.P(A) = 0.2d.P(A) × P(B) = (0.2)(0.4) = 0.08
Solution
The correct answer is c. P(A) = 0.2.
This is because in probability theory, if two events are independent, then the probability of one event occurring given that the other has occurred is simply the probability of that event occurring. In other words, if A and B are independent, then P(A|B) = P(A). So, the probability of event A given that event B has occurred is just the probability of event A, which is 0.2.
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