College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter 10 - Test: 14

Answer

0.19

Work Step by Step

Let's call the probability of a college student being between 18 and 20 years old" = x As all probabilities in a probability model add up to one, we obtain: (0.03 + x + 0.23 + 0.29 + 0.25 + 0.01) = 1 = ( x + 0.81) = 1 x= 1 - 0.81 x = 0.19 Thus, the probability that a randomly selected student at the college is between 18 and 20 years old = 0.19
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