Mathematics, 19.02.2021 16:30, cantrelate

A quality control engineer wants to estimate the mean fill weight of boxes that have been filled with cereal by a certain machine on a certain day. He draws a simple random sample of 80 boxes from the population of boxes that have been filled by that machine on that day. He computes the sample mean fill weight to be Xbar = 11.5 oz, and the sample standard deviation to be s = 0.1 oz. If the engineer claims that the confidence interval is (11.486, 11.514) what will be his level of confidence?

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A quality control engineer wants to estimate the mean fill weight of boxes that have been filled wit...