Some researchers believe that a new drug would benefit about half of all people with a certain blood disorder. To estimate the proportion of patients who would benefit from taking the drug, it will be administered to a random sample of patients with the disorder. What is the smallest sample size needed so that the 99% confidence interval will have a margin of error of no more than 3.5%? 748 2401 1070 2056 1503 Next Page Page 11 of 42

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A: Given Information: Sample size (n) = 22  Mean (u) = 12 Standard deviation (s) = 5.4

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