Question

Listed below are student evaluation ratings of​ courses, where a rating of 5 is for​ "excellent." The ratings were obtained at one university in a state. Construct a confidence interval using a 90​% confidence level. What does the confidence interval tell about the population of all college students in the​ state?

3.5​, 2.9​, 4.2​, 5.0​, 3.1​, 4.0​, 3.7​, 4.7​, 4.1​, 3.9​, 4.1​, 3.6​, 3.1​, 4.1​, 4.0

What is the confidence interval for the population mean μ​?

? < μ < ? (Round to two decimal places as​ needed.)

What does the confidence interval tell about the population of all college students in the​ state? Select the correct choice below​ and, if​ necessary, fill in the answer​ box(es) to complete your choice.

A. The results tell nothing about the population of all college students in the​ state, since the sample is from only one university.

B.We are confident that 90​% of all students gave evaluation ratings between nothing and nothing. ​(Round to one decimal place as​ needed.)

C. We are 90​% confident that the interval from nothing to nothing actually contains the true mean evaluation rating. ​(Round to one decimal place as​ needed.)

  

Answer 1

answered by: anonymous