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A pollster wishes to estimate, with 95% confidence, the proportion of people who believe that recent...

A pollster wishes to estimate, with 95% confidence, the proportion of people who believe that recent changes in climate are primarily due to human activity.


Find the minimum sample size necessary to achieve a margin of error of less than 3%.

  1. Assuming no previous estimates are available. Round your answer up to the next integer.
  2. Assuming a previous estimate of 0.65. Round your answer up to the next integer.
Math   Statistics-And-Probability   
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