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% of the
A) 966
B) 683
C) 1183
D) 484

Question

Quizplus · Accepted Answer

The sample size needed to be 98% confident that the proportion of women who wear shoes that are too small for their feet is within 3% of 80% is 966. This can be calculated using the formula: n = (Z^2 * p * q) / e^2, where Z is the z-score for the desired confidence level, p is the proportion of women who wear shoes that are too small for their feet, q is the complement of p, and e is the margin of error.

The Academy of Orthopedic Surgeons States That 80% of Women