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) II only
B) none
C) I and III
D) I only
E) III only

Question

Quizplus · Accepted Answer

A confidence interval indicates that we are 98% confident that the true mean lies within the interval, not that there is a 98% chance. It does not imply anything about individual students or weekly averages.

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