The mean duration of television commercials on a given network is 75 seconds, with a standard deviation
Question:
Assume that durations are approximately normally distributed.
a. What is the approximate probability that a commercial will last less than 35 seconds?
b. What is the approximate probability that a commercial will last longer than 55 seconds?
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Step by Step Answer:
a It is known that duration times are approximately normal with mean 75 and s...View the full answer
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Related Book For 
Introduction To Probability And Statistics
ISBN: 9781133103752
14th Edition
Authors: William Mendenhall, Robert Beaver, Barbara Beaver
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