Introductory Statistics
1st Edition
ISBN: 9781938168208
Author: Barbara Illowsky, Susan Dean
Publisher: OpenStax College
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Textbook Question
Chapter 5, Problem 92H
Use the following information to answer the next three exercises The average lifetime of a certain new cell phone Is three years. The manufacturer will replace any cell phone falling within two years of the date of purchase. The lifetime of these cell phones Is known to follow an exponential distribution.
What is the probability that a phone will fail within two years of the date of purchase?
a. 0.86-17
b. 0.4866
c. 0.22 12
d. 0.9997
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Introductory Statistics
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