College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter 8 - Sequences, Induction, and Probability - Exercise Set 8.7 - Page 784: 31



Work Step by Step

We know that $probability=\frac{\text{number of favourable outcomes}}{\text{number of all outcomes}}$ The total population (the number of all outcomes) is $174$ By using the table, the total number of people who have not completed 4 years is the sum of the ones who completed less than 4 years of high school, 4 years of high school only, and some college, which here is $129$ Hence the probability here is: $\frac{129}{174}=\frac{43}{58}$
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