06-12-2016
Mathematics

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A recent survey suggests that 85% of adults know what Twitter is. How many adults should you survey in order to be 90% confident that your estimate is within 5% of the true population proportion?

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J4mesTDG J4mesTDG

06-12-2016

an odd number of adults so you have no tie at all, I would recommend to survey at least 75 adults to get a good 90% confident.

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