The t Test Susan's two-group experiment ran 10 subjects in the control condition and 12 subjects in the experimental condition.Calculate the degrees of freedom for a t test for independent groups using these data.
A)11
B)12
C)20
D)22

Question

Quizplus · Accepted Answer

To calculate the degrees of freedom for a t test for independent groups, we use the formula DF = (n1 + n2) - 2, where n1 and n2 are the sample sizes of the two groups. Plugging in the numbers from the problem, we get DF = (10 + 12) - 2 = 20, so the correct answer is C.

The T Test Susan's Two-Group Experiment Ran 10 Subjects in the Control