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 - 13-1 Experimental and Theoretical Probability - Practice and Problem-Solving Exercises - Page 828: 21

Answer

About 133 calculators.

Work Step by Step

The probability of any given calculator being defective is: 4/450 = .00888 We multiply this by 15,000 to estimate: .00888*15000 $\approx 133$

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