A repeated-measures study and an independent-measures study both produce t statistics with df = 20. The independent-measures study used more participants.
True or False
True.
In statistical hypothesis testing, the degrees of freedom (df) are used to determine the critical values for the t statistic. In this case, both the repeated-measures study and the independent-measures study produced t statistics with df = 20.
The df value in both cases is determined by the number of participants or groups in the study. So, even though the independent-measures study used more participants, both studies resulted in t statistics with the same degrees of freedom.
Therefore, the statement is true - both studies produced t statistics with df = 20, even though the independent-measures study used more participants.