Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 11 - Review Exercises - Page 842: 100



Work Step by Step

Let's find the probability of getting no tail: $P(no~tail~five~times)=P(not~a~tail)^5=(\frac{1}{2})^5=\frac{1}{32}$ The event "getting at least one tail" is the complement of the event "getting no tail": $P(at~least~one~tail)=1-P(no~tail~five~times)=1-\frac{1}{32}=\frac{31}{32}$
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