SOLUTION: For a class activity, your group has been assigned the task of generating a quiz question that requires use of the formula for conditional probability to compute P(B | A). Your gro
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Question 632300: For a class activity, your group has been assigned the task of generating a quiz question that requires use of the formula for conditional probability to compute P(B | A). Your group comes up with the following question: "If P(A and B) = 0.40 and P(A) = 0.20, what is the value of P(B | A)?" What is wrong with this question? Hint: Consider the answer you get when using the correct formula, P(B | A) = P(A and B)/P(A). Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! The conditional probability turns out to be "2".
But probabilities cannot exceed "1".
The problem conditions are contradictory.
Cheers,
Stan H.
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