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 ​98% confidence level. What does the confidence interval tell about the population of all college students in the​ state?

3.9, 2.9, 3.9, 4.8, 3.0, 4.2, 3.4, 4.5, 4.5, 4.2, 4.3, 3.9, 3.3, 3.9, 3.7

Answer 1

The 98% confidence interval for this data is (3.5, 4.4). This confidence interval tells us that 98% of the time, the average rating of all college students in the state for the course will fall between 3.5 and 4.4.