Question

To estimate the average time taken to complete the Stat 121 final exam, instructors randomly selected 150 students that had previously taken the course and recorded their time on the test. The instructors then calculated a 98% confidence interval to be (98, 142) minutes. What is the parameter the instructors are trying to estimate?

Answer 1

Answer:

The population mean

Explanation:

The confidence interval gives the probability that a certain population parametwr falls in between a pair values based on the given sample mean and a stated confidence level.

The confidence interval ; (98, 142) gives the pair of interval in which the population mean time taken in stat 121 finals at 98% level of confidence.

Hence, we can be 98% confident that the the population parameter would fall within 98 and 142.