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In manufacturing processes, it is of interest to know with confidence the proportion of defective parts. Suppose that we want to be reasonably certain that
- In manufacturing processes, it is of interest to know with confidence the proportion of defective parts. Suppose that we want to be reasonably certain that more than 96% of a company's widgets are not defective. To test this, we obtain a random sample of 250 widgets from a large batch, and 6 are determined to be defective. Conduct the hypothesis test at the 1% significance level and draw a conclusion.
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