If you wish to test the difference between the means of two-paired populations with samples of size 15 each, then the appropriate degrees of freedom is equal to:
A) 29
B) 28
C) 15
D) 14
E) 12

Question

Quizplus · Accepted Answer

The appropriate degrees of freedom for a paired t-test is calculated as n-1 where n is the sample size. In this case, since the sample size for each population is 15, the degrees of freedom is 15-1=14. Therefore, the correct answer is D) 14.

If You Wish to Test the Difference Between the Means