A Marine drill instructor recorded the time in which each of 11 recruits completed an obstacle course both before and after basic training.To test whether any improvement occurred,the instructor would use a t-distribution with 11 degrees of freedom

Question

Quizplus · Accepted Answer

The correct degrees of freedom for a paired t-test (which is appropriate for this scenario) would be 10, not 11, because degrees of freedom are calculated as n - 1, where n is the number of pairs (11 pairs in this case).

A Marine Drill Instructor Recorded the Time in Which Each