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9) (10 points) Fox Mulder and Dana Scully have been assigned to investigate an FBI X-File in Cheney, Texas, a small town with population 1469.

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9) (10 points) Fox Mulder and Dana Scully have been assigned to investigate an FBI X-File in Cheney, Texas, a small town with population 1469. Scully wants to ascertain the proportion of residents who have been turned into Vampires with an error of no more than 10% and a 90% confidence interval. How many residents should Scully test? Show your work or specify your calculator inputs for full credit

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