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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
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.
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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?
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