College X Is Concerned About Their Employees Making Use of Their

Multiple Choice

College X is concerned about their employees making use of their email for non-business purposes.
You have been approached to assist in this matter. College X decides on a 90% confidence level
And state that the estimation proportion must be within 2 percent of the population proportion. A
Pilot survey reveals that 10 out of 50 emails sampled were not for business purposes. How many
Emails should be surveyed to meet your requirements?

A) 910
B) 1,537
C) 1,083
D) 1,221
E) 2,654