A study of 55 professors showed that the average time they spent creating test questions was 16.5 minutes per question. The standard deviation of the population is 5.8. Which
Of the following is the 99% confidence interval for the average number of minutes it
Takes to create a test question?
A) $14.5

Question

A study of 55 professors showed that the average time they spent creating test questions was 16.5 minutes per question. The standard deviation of the population is 5.8. Which
Of the following is the 99% confidence interval for the average number of minutes it
Takes to create a test question? 
A) $14.5 < \mu < 18.5$
B) $15.5 < \mu < 17.5$
C) $14.7 < \mu < 18.3$
D) $12.5 < \mu < 20.5$

Quizplus · Accepted Answer

The Answer of A study of 55 professors showed that the average time they spent creating test questions was 16.5 minutes per question. The standard deviation of the population is 5.8. Which
Of the following is the 99% confidence interval for the average number of minutes it
Takes to create a test question? 
A) $14.5 < \mu < 18.5$
B) $15.5 < \mu < 17.5$
C) $14.7 < \mu < 18.3$
D) $12.5 < \mu < 20.5$

A Study of 55 Professors Showed That the Average Time 14.5<μ<18.514.5 < \mu < 18.514.5<μ<18.5

A Study of 55 Professors Showed That the Average Time $14.5 < \mu < 18.5$