Answer
$0.36 $ or, $36 \%$
Work Step by Step
Here, we have $P(B|A)=\dfrac{\text{placebo and got better} }{\text{placebo}}$
or, $P(B|A)=\dfrac{0.12}{1/3}$
or, $P(B|A)=0.36 $ or, $36 \%$
Geometry: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281159
ISBN 13:
978-0-13328-115-6
Chapter 13 - Probability - 13-6 Conditional Probability Formulas - Practice and Problem-Solving Exercises - Page 860: 14
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