A researcher found that a 98% confidence interval for the mean hours per week spent studying by
College students was (13, 17). Which is true?
I. There is a 98% chance that the mean hours per week spent studying by college students is
Between 13 and 17 hours.
II. 98% of college students study between 13 and 17 hours a week.
III. Students average between 13 and 17 hours per week studying on 98% of the weeks.
A) I only
B) I and III
C) III only
D) none of these
E) II only

Question

Quizplus · Accepted Answer

A confidence interval indicates that if we were to take many samples and build a confidence interval from each of them, 98% of those intervals would contain the true mean. It does not mean there is a 98% chance that the true mean is within this specific interval. Therefore, none of the statements are correct.

A Researcher Found That a 98% Confidence Interval for the Mean