A Nationally Distributed College Newspaper Conducts a Survey Among Students

Multiple Choice

A nationally distributed college newspaper conducts a survey among students nationwide every year.This year,responses from a simple random sample of 204 college students to the question "About how many CDs do you own?" resulted in a sample mean of = 72.8.Based on data from previous years,the editors of the newspaper will assume that  = 7.2.Use the information given to obtain a 95% confidence interval for the mean number of CDs owned by all college students.

A) (65.6,80.0)
B) (71.8,73.8)
C) (72.0,73.6)
D) (72.3,73.3)