The Academy of Orthopedic Surgeons States That 80% of Women

Multiple Choice

The Academy of Orthopedic Surgeons states that 80% of women wear shoes that are too small for their feet. A researcher wants to be 98% confident that this proportion is within
3 percentage points of the true proportion. How large a sample is necessary?

A) 683
B) 484
C) 966
D) 1183