Multiple Choice
For the repeated-measures t statistic,where n1 and n2 are the number of scores before and after treatment,and n = n1= n2,df = ____.
A) n1 + n2 - 2
B) n - 2
C) n - 1
D) n1 + n2 - 1
Correct Answer:

Verified
Correct Answer:
Verified
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