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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Regards,
Cathy, CS.
