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For a certain type of ight the number of hous a bub will bum beforerequing replacement tenamean of 4000 hours anda standd deeviaton of 250 hovr Scpose that o00 h hat will eure eplacemant behween 200 and 4s00 hours from the tme of intlation inted in an ffice buldng Eanma euber tlet bube will regue replacement beteen 300 and 400 houn trom the sme ot tatn Round to the earest whole umer as needed)

For a certain type of ight the number of hous a bub will bum beforerequing replacement tenamean of 4000 hours anda standd deeviaton of 250 hovr Scpose that o00 h hat will eure eplacemant behween 200 and 4s00 hours from the tme of intlation inted in an ffice buldng Eanma euber tlet bube will regue replacement beteen 300 and 400 houn trom the sme ot tatn Round to the earest whole umer as needed)

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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For a certain type of light the number of touns a bub wil bum before requiring repiacement tas a mean of 4000 houn and a standard deviaton of 250 hous. Sepose that 7000 th bubse ined in an ofmce buldrg Eatmate heumber that will rere replacemant between 3so0 and 4500 hours tom the time of inetalation Al eastbube will requne replacement beteen 300 and 400 houn tam t sme ot taten (Mound to the nearest whole umber as needed )
Transcribed Image Text:For a certain type of light the number of touns a bub wil bum before requiring repiacement tas a mean of 4000 houn and a standard deviaton of 250 hous. Sepose that 7000 th bubse ined in an ofmce buldrg Eatmate heumber that will rere replacemant between 3so0 and 4500 hours tom the time of inetalation Al eastbube will requne replacement beteen 300 and 400 houn tam t sme ot taten (Mound to the nearest whole umber as needed )
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