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Mathematics, 13.01.2020 05:31 shayshay4352

The breaking strengths of cables produced by a certain manufacturer have a standard deviation of 90 pounds. a random sample of 80 newly manufactured cables has a mean breaking strength of 1850 pounds. based on this sample, find a 90% confidence interval for the true mean breaking strength of all cables produced by this manufacturer. then complete the table below.

carry your intermediate computations to at least three decimal places. round your answers to one decimal place.

what is the lower limit of the 90% confidence interval?

what is the upper limit of the 90% confidence interval?

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