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Mathematics, 24.03.2020 02:33 trejo282961
. The lifetime of light bulbs are normally distributed with a mean of 270 hours and a standard deviation of 11 hours. What percentage of the bulbs have lifetimes that lie within 2 standard deviations of the mean on either side?
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. The lifetime of light bulbs are normally distributed with a mean of 270 hours and a standard devia...
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