What is the lower limit of the confidence interval

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The flexing ability of cords produced by a certain manufacturer have a standard deviation of 84 pounds. A random sample of 80 newly manufactured cords has a mean breaking strength of 1950 pounds. Based on this sample, find a 99% confidence interval for the true mean breaking strength of all cords produced by this manufacturer.

Carry your intermediate computations to at least three decimal places.

What is the lower limit of the 99% confidence interval?

What is the upper limit of the 99% confidence interval?

Reference no: EM132464672

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