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MMLU / A telephone survey of 400 registered voters showed that 256 had not yet made up…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

A telephone survey of 400 registered voters showed that 256 had not yet made up their minds 1 month before the election. How sure can we be that between 60% and 68% of the electorate were still undecided at that time?

choices

  1. 2.4%
  2. 8.0%
  3. 64.0%
  4. 90.4%

subject

high_school_statistics

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Source and history

Official source

initial import