Events A and B are independent with P(A) = 0.4 and P(B) = 0.5. What is P(A and B)?
Answer and explanation
Correct answer: D. 0.20
- Step 1: For independent events, P(A and B) = P(A) x P(B). Step 2. 0.4 x 0.5 = 0.20. Answer: 0.20. Why not the others: For independent events, P(A and B) = P(A) P(B) = 0.4 0.5 = 0.20. 0.90 is the sum P(A) + P(B), while 0.10 incorrectly divides the probabilities.
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