Problem 83 of 7
Find the condition total from joint count and conditional probability: If 54 people have both characteristic C and D, and the probability of having C given D is 0.9.
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rearrange conditional fraction.
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Use condition total = joint count divided by conditional probability.
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Your answer is equivalent to the expected form.
Walkthrough
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1. Write conditional probability as joint count over condition total.
2. Substitute known joint count and rate.
3. Solve for the denominator.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Using conditional rate as a count.