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Mathematics, 15.04.2020 02:09 lillianrhoades2

Lifetime of electronics: In a simple random sample of 100 electronic components produced by a certain method, the mean lifetime was 125 hours. Assume that component lifetimes are normally distributed with population standard deviation σ = 20 hours.

Construct a 99.5% confidence interval for the mean battery life. Round the answer to the nearest whole number.

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