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Polytechnic State University Sanluis Jan-2006 - Nov-2010
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Category > StatisticsPosted 18 Jun 2017My Price7.00
Light bulbs manufactured by a certain factory last a random time between 400 and 1200 hours
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Light bulbs manufactured by a certain factory last a random time between 400 and 1200 hours. What is the probability that, of eight such bulbs, three burn out before 550 hours, two burn out after 800 hours, and three burn out after 550 but before 800 hours?
