A researcher wishes to know, with 98% confidence, the percentage of women who wear shoes that are too small for their feet.

  • A researcher wishes to know, with 98% confidence, the percentage of women who wear shoes that are too small for their feet. A previous study conducted by the Academy of Orthopedic Surgeons found that 80% of women wear shoes that are too small for their feet. If the researcher wants her estimate to be within 3% of the true proportion, how large a sample is necessary?
  • A. 966
  • B. 683
  • C. 183
  • D. 484

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