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MMLU / A major polling organization wants to predict the outcome of an upcoming…

Problem

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question

A major polling organization wants to predict the outcome of an upcoming national election (in terms of the proportion of voters who will vote for each candidate). They intend to use a 95% confidence interval with margin of error of no more than 2.5%. What is the minimum sample size needed to accomplish this goal?

choices

  1. 1536
  2. 39
  3. 1537
  4. 40

subject

high_school_statistics

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