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Mathematics, 14.07.2019 22:30 jlink6836
Assume the mean useful life of a particular light bulb is 2,000 hours, which is normally distributed with a standard deviation of 300 hours. what is the range of the useful life of light bulbs within two standard deviations of the mean?
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Assume the mean useful life of a particular light bulb is 2,000 hours, which is normally distributed...
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