If P(B|A) = 0.25 and P(A ∩ B) = 0.2, what is P(A)?
Correct answer D. 0.8
Explanation
Conditional probability gives P(B|A) = P(A ∩ B)/P(A), so P(A) = 0.2 ÷ 0.25 = 0.8.
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