In a study comparing the means of two groups in which there are 45 males in Group 1 and 37 females in Group 2,the degrees of freedom for this study when using the t-test for the difference between means is:
A)84
B)80
C)82
D)160

Question

Quizplus · Accepted Answer

The degrees of freedom for a t-test comparing two independent means is calculated as the sum of the sample sizes of both groups minus 2: (45 + 37 - 2 = 80).

In a Study Comparing the Means of Two Groups in Which