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A quality control engineer is interested in estimating the proportion of defective items. In a sample of 500 items, 95 are defective. We want to
A quality control engineer is interested in estimating the proportion of defective items. In a sample of 500 items, 95 are defective. We want to estimate the 95% confidence interval.
(a) What is the margin of error of the confidence interval?
(b) What is the width of the confidence interval?
(c) What is the upper confidence limit of the confidence interval?
(d) What is the lower confidence limit of the confidence interval?
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