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 $\sigma$ = 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)

Question

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 $\sigma$ = 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)

Quizplus · Accepted Answer

The Answer of 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 $\sigma$ = 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)

A Nationally Distributed College Newspaper Conducts a Survey Among Students σ\sigmaσ

A Nationally Distributed College Newspaper Conducts a Survey Among Students $\sigma$