MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Suppose that the lifetimes of light bulbs are approximately
56
hours and a standard deviation of
3.3
hours. With this information, answer the following questions.
Suppose that the lifetimes of light bulbs are approximately normally distributed, with a mean of
56
hours and a standard deviation of
3.3
hours. With this information, answer the following questions.(a) What proportion of light bulbs will last more than
62
hours?(b) What proportion of light bulbs will last
51
hours or less?(c) What proportion of light bulbs will last between
57
and
62
hours?(d) What is the probability that a randomly selected light bulb lasts less than
46
hours?Expert Solution
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