If other factors are held constant, which of the following sets of data would produce the largest value for an independent-measures t statistic?
a. The two samples both have n = 15, with sample variances of 20 and 25.
b. The two samples both have n = 15, with variances of 120 and 125.
c. The two samples both have n = 30, with sample variances of 20 and 25.
d. The two samples both have n = 30, with variances of 120 and 125.
C
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