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.
A random sample of 400 e-mails discovered 60 messages that were not business related. The 90%
Confidence interval for the population proportion is:

A) 0.104 to 0.196
B) 0.115 to 0.185
C) 0.148 to 0.252
D) 0.121 to 0.179
E) 0.186 to 0.254