Elementary Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321836960
ISBN 13: 978-0-32183-696-0

Chapter 4 - Probability - 4-5 Multiplication Rule: Complements and Conditional Probability - Basic Skills and Concepts - Page 172: 10

Answer

$0.9936$

Work Step by Step

Complement of P(A) is that none of the calculators work. We have 2 calculators, so: P(at least one works)=$1-P(\overline{A})=(1-0.92)^{2}=1−(0.08)^{2}=0.9936$
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