College Algebra (11th Edition)

Published by Pearson
ISBN 10: 0321671791
ISBN 13: 978-0-32167-179-0

Chapter R - Review Exercises - Page 74: 41

Answer

$3,550$ students

Work Step by Step

"Over the age of $19$" includes anyone aged $20$ or older. The population aged 20 or older is the sum of the populations aged $20-24, 25-34,$ and $35$ and older. Add the percentages represented by these age groups to obtain: $$43 + 16 + 12 = 71$$ Thus, $71$ percent ot the students are older than $19$. Hence, In a random sample of $5000$ students, $71\%$ of them are expected to be older than $19$. $=5000 \left(71/100\right)$ $=50\cdot71$ $=3550$
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