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solve all parts (9 pts) A particular type of fluorescent light bulb used for street lights has a mean life u- 1200 hours, with a

solve all parts

(9 pts) A particular type of fluorescent light bulb used for street lights has a mean life u- 1200 hours, with a standard deviation 0= 192 hours. If we select a random sample of 36 of these light bulbs, find P( X > 1257)

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