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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

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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 o = 20 hours. Round the critical value to no less than three decimal places. Part: 0 / 2 Part 1 of 2 (a) Construct a 95 % confidence interval for the mean battery life. Round the answer to the nearest whole number. A 95 % confidence interval for the mean battery life is 1

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