A human resources manager at a large company wants to estimate the proportion
Of employees that would be interested in reimbursement for college courses. If she
Wishes to be 95% confident that her estimate is within 5% of the true proportion, how
Many employees would need to be sampled?
A) 271
B) 385
C) 543
D) 646
E) 1234

Question

Quizplus · Accepted Answer

To determine the sample size for estimating a proportion with a given confidence level and margin of error, the formula n = (Z^2 * p * (1-p)) / E^2 is used. Assuming p = 0.5 for maximum variability, Z = 1.96 for 95% confidence, and E = 0.05, the calculation results in approximately 385.

A Human Resources Manager at a Large Company Wants to Estimate