Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 10 - Review Exercises - Page 1126: 87


The probability that a randomly selected student is from a low-income family among people who attend public college is $\frac{10}{21}$.

Work Step by Step

We know that the probability that a student is from a low income family among those who attend public college is: $\begin{align} & \text{P}\left( \text{low income, among public college students} \right)\text{ = }\frac{\text{students from low income family}}{\text{students attend public college}} \\ & =\frac{120}{252} \\ & =\frac{10}{21} \end{align}$
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