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I need help to find the missing probability. P(A and B)=33/100P(B/A)=3/5P(A)=?

User Dhartford
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1 Answer

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we are given the probability of A and B and the conditional probability B/A. We can use the following formula to determine the probability of A:


P(A\wedge B)=P(A)* P((B)/(A))

Solving for the probability of A:


P(A)=(P(A\wedge B))/(P((B)/(A)))

Replacing the known values:


P(A)=((33)/(100))/((3)/(5))

Solving the operations:


P(A)=0.55

Therefore the probability of A is 55%

User Jeremy Banks
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