If P(A) = 0.50, P(B) = 0.40, then, and P(A $\cup$ B) = 0.88, then P(B | A) =
A)0.02
B)0.03
C)0.04
D)0.05

Name: If P(A) = 0.50, P(B) = 0.40, then, and P(A $\cup$ B) = 0.88, then P(B | A) = A)0.02 B)0.03 C)0.04 D)0.05
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Question

Quizplus · Accepted Answer

P(B | A) is calculated using the formula P(B | A) = P(A ∩ B) / P(A). First, find P(A ∩ B) using P(A ∪ B) = P(A) + P(B) - P(A ∩ B). So, P(A ∩ B) = P(A) + P(B) - P(A ∪ B) = 0.50 + 0.40 - 0.88 = 0.02. Then, P(B | A) = P(A ∩ B) / P(A) = 0.02 / 0.50 = 0.04.

If P(A) = 0 ∪\cup∪ B) = 088, Then P(B | A) = A)0

If P(A) = 0 $\cup$ B) = 088, Then P(B | A) =
A)0