For a certain type of light, the number of hours a bulb will burn before requiring replacement has a mean of 4000 hours and a standard deviation of 200 hours. Suppose that
For a certain type of light, the number of hours a bulb will burn before requiring replacement has a mean of 4000 hours and a standard deviation of 200 hours. Suppose that
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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For a certain type of light, the number of hours a bulb will burn before requiring replacement has a mean of
4000
hours and a standard deviation of
200
hours. Suppose that
5000
such bulbs are installed in an office building. Estimate the number that will require replacement between
3600
and
4400
hours from the time of installationExpert Solution
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