Question

Asked Sep 21, 2019

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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*).

Step 1

Solution:

We are given:

Step 2

We have to find:

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