shaylakabler6362 shaylakabler6362

26-09-2017
Mathematics

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A new extended-life light bulb has an average service life of 750 hours, with a standard deviation of 50 hours. if the service life of these light bulbs approximates a normal distribution, about what percent of the distribution will be between 600 hours and 900 hours? 95% 68% 34% 99.7%

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laurendollar01 laurendollar01

30-09-2017

ok so use calculator type in 900 divided by 100 would equal 9 so the answer is 95%

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