Nine Out of 25 Randomly Selected Students of WMU Live

Multiple Choice

Nine out of 25 randomly selected Students of WMU live in Southwest Michigan. The result says that the true proportion could be as low as 0.17 or as high as 0.55. If we
Want to reduce the margin of error from 0.19 to 0.10. Using the estimate of 0.36 based on
The initial sample, what sample size would be needed to achieve the reduced margin of
Error?

A) 92
B) 85
C) 10
D) 50
E) Cannot be determined