In a survey of 3042 adults aged 57 through 85 years, it was found that 81.7% of them used at least one prescription medication. Complete parts (a) through (c) below. a. How many of the 3042 subjects used at least one prescription medication? 2485 (Round to the nearest integer as needed.) 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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