THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
In a stratified random sample of students on a campus,sample members were asked to rate,on a scale of 1 (poor)to 5 (excellent),opportunities for improving the college infrastructure.The results are shown in the table below.

-Find a 90% confidence interval for the mean rating given by all the undergraduate students on the campus.
A)4.29 ± 0.684
B)4.29 ± 0.421
C)4.29 ± 0.148
D)4.29 ± 0.232

Question

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
In a stratified random sample of students on a campus,sample members were asked to rate,on a scale of 1 (poor)to 5 (excellent),opportunities for improving the college infrastructure.The results are shown in the table below.
 
-Find a 90% confidence interval for the mean rating given by all the undergraduate students on the campus.
A)4.29 ± 0.684 
B)4.29 ± 0.421 
C)4.29 ± 0.148 
D)4.29 ± 0.232

Quizplus · Accepted Answer

The Answer of THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
In a stratified random sample of students on a campus,sample members were asked to rate,on a scale of 1 (poor)to 5 (excellent),opportunities for improving the college infrastructure.The results are shown in the table below.
 
-Find a 90% confidence interval for the mean rating given by all the undergraduate students on the campus.
A)4.29 ± 0.684 
B)4.29 ± 0.421 
C)4.29 ± 0.148 
D)4.29 ± 0.232