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In a survey of 3250 adults aged 57 through 85 years, it was found that 81.9% of them used at least one prescription medication. A.

In a survey of 3250 adults aged 57 through 85 years, it was found that 81.9% of them used at least one prescription medication. A. 3250 subjects used at least one prescription medication? B. Construct a 90% confidence interval estimate of the percentage of adults aged 57 through 85 years who use at least one prescription medication %

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