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In a preliminary study a simple random sample of 100 computer chips was tested and 17 of them were found to be defective Another sample will be drawn in order to construct a 98% confidence interval

In a preliminary study, a simple random sample of 100 computer chips was tested and 17 of them were found to be defective. Another sample will be drawn in order to construct a 98% confidence interval for the proportion of chips that are defective. Use the results of the preliminary study to estimate the sample size needed so the confidence interval will have a margin of error of 0.06. 

Apr 23 2020 View more View Less

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