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6. A similar study is being planned at a medical center in the midwest to improve upon the infor- mation gained in the initial study.
6. A similar study is being planned at a medical center in the midwest to improve upon the infor- mation gained in the initial study. Researchers would like to limit the resulting 99% confidence interval to a total width of 20 mg/dL. How many heart attack patients should be included in this second study
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