Mathematics, 11.06.2021 02:30 lupitasalas9283
Suppose that the lifetimes of TV tubes are normally distributed with a standard deviation of 1.1 years. Suppose also that exactly 20% of the tubes die before 4 years. Find the mean lifetime of TV tubes. Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place.
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Suppose that the lifetimes of TV tubes are normally distributed with a standard deviation of 1.1 yea...
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