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Questions 1-3
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1. An independent-measures study comparing two treatment conditions produces a t statistic with df = 18. If the two samples are the same size, how many participants were in each of the samples?
2. Caroline and Mira are both really smart and do equally well in their psychology classes, but something happens to Caroline when she goes to their philosophy class. She just can't keep up, whereas Mira does even better. One of the independent variables is the student.
Here it is given that-
df = 18
two samples are of the same size.
1. Let, n1 is the size of the first sample and n2 is the size of the second sample.
So, n1+n2-2 = 18
as, n1=n2=n
2n = 20
or, n = 10
So, there were 10 participants in each of the samples.
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