Conditional Probability

Question 3 • TN-Algebra II B SC 26-27 (For Credit)

If events A and B are independent, what must be true?

Answer

P(A|B) = P(B)

P(A|B) = P(A)

P(A) = P(B)

P(A|B) = P(B|A)

For independent events, knowing that B occurred does not change the probability of A. Thus P(A|B) = P(A), so the correct choice is “P(A|B) = P(A).”

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