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Find the missing probability. P(B)=1/2,P(A∩B)=7/40,P(A|B)=? A. 2/5 B. 7/20 C. 1/2 D. 7/40
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Find the missing probability. P(B)=1/2,P(A∩B)=7/40,P(A|B)=? A. 2/5 B. 7/20 C. 1/2 D. 7/40

User Nalin Ranjan
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1 Answer

4 votes

Answer:

Option (B) : 7 / 20

Explanation:


P(A∩B)=P(B) * P(A|B)


P(A|B) = (P(A∩B))/(P(B)) = (7)/(40) * (2)/(1) = (7)/(20)

User Zahid Karim
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