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In a survey of 3005 adults aged 57 through 85 years, it was found that 81.7%...

  1. In a survey of 3005 adults aged 57 through 85 years, it was found that 81.7% of them used at least one prescription medication. Use a 0.01 significance level to test the claim that more than 2/5 of adults use at least one prescription medication. Does the rate of prescription use among adults appear to be high?

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