An independent-measures study uses two samples,each with n = 10,to compare two treatment conditions.What is the df value for the t statistic for this study?
A)8
B)9
C)18
D)19

Question

An independent-measures study uses two samples,each with n = 10,to compare two treatment conditions.What is the df value for the t statistic for this study?​
A)​8
B)​9
C)​18
D)​19

Quizplus · Accepted Answer

The degrees of freedom (df) for an independent-measures t-test is calculated as the sum of the sample sizes of the two groups minus 2. Here, with two groups each having n = 10, df = (10 + 10) - 2 = 20 - 2 = 18.

An Independent-Measures Study Uses Two Samples,each with N = 10,to