If researchers reported that, for a correlated-groups design, t(20) = 3.57, p
A)a total of 21 people participated in the study.
B)a total of 22 people participated in the study.
C)a total of 40 people participated in the study.
D)the number of participants cannot be determined.

Question

Quizplus · Accepted Answer

The degrees of freedom (df) for a correlated-groups design is N-1, where N is the number of participants. In this case, df = 20, so N = 21.

If Researchers Reported That, for a Correlated-Groups Design, T(20) =