Answer: 11
Step-by-step explanation:
We know that the degree of freedom for a t-distribution is given by :-
[tex]df=n-1[/tex], where n is the sample size.
Given : A repeated-measures experiment and a matched-subjects experiment each produce a t statistic with df = 10.
Then, the number of individuals participated in each study = [tex]df+1=10+1=11[/tex]
Hence, the number of individuals participated in each study =11.
