Average talk time between charges of a cell phone is advertised as 4 hours. Assume that talk
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Average talk time between charges of a cell phone is advertised as 4 hours. Assume that talk time is normally distributed with a standard deviation of 0.8 hour.
a. Find the probability that talk time between charges for a randomly selected cell phone is below 3.5 hours.
b. Find the probability that talk time between charges for a randomly selected cell phone is either more than 4.5 hours or below 3.5 hours.
c. Twenty-five percent of the time, talk time between charges is below the 1st quartile value. What is this value? LO5
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Related Book For
Business Statistics Communicating With Numbers
ISBN: 9780071317610
1st Edition
Authors: Kelly Jaggia
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