Mathematics, 06.05.2021 21:20 mercymain1014
the amount of time a certain brand of light bulb lasts is normally distributed with a mean if 1800 hours and a standard deviation of 85 hours. Using the empirical rule, what percentage of light bulbs last between 1630 hours and 1970 hours?
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Divide reduce the answer to lowest term 3/7 divided 1 1/6
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