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Pew Research Reports That 63% of the U ±7.5%\pm 7.5 \%

question 116

Essay

Pew Research reports that 63% of the U.S. adult cell phone owners use their phone to go online. A company wants to target
16- to 24-year olds for advertising and they wonder if that age group has a similar pattern of phone use.
-The company wants to estimate the true percentage of 16- to 24-year old cell phone
owners who use their phone to go online to within ±7.5%\pm 7.5 \%
with 95% confidence. How
many cell phone owners in this age group should they sample?


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