annonomous287 annonomous287
  • 12-11-2022
  • Mathematics
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A Gallup poll found that 30% of adult Americans report that drinking has been a source of trouble in their families. Gallup asks this question every year. What sample size should Gallup use next year to get a margin of error of 3% and be as economical as possible using a 95% confidence interval? Show all of your work or explain how you know.

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