Mathematics, 13.06.2020 04:57 teagan1716
Tests of a new light led to an estimated mean life of 1,321 hours and standard deviation of 106 hours. The manufacturer will advertise the lifetime of the bulb using the largest value for which it is expected that 90% of the bulbs will last at least that long. Assuming bulb life is normally distributed, find that advertised value.
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Tests of a new light led to an estimated mean life of 1,321 hours and standard deviation of 106 hour...
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