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The breaking strengths of cables produced by a certain manufacturer have a standard deviation of83 pounds. A random sample of60 newly manufactured cables has a

The breaking strengths of cables produced by a certain manufacturer have a standard deviation of83

pounds. A random sample of60

newly manufactured cables has a mean breaking strength of1750

pounds. Based on this sample, find a95

confidence interval for the true mean breaking strength of all cables produced by this manufacturer. Then give its lower limit and upper limit.

Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult alist of formulas.)

Lower limit:

Upper limit:

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