Which of the following sets of sample data would produce the largest value for an independent-measures t statistic. Assume that n = 10 for all samples.
1) a sample mean difference of 10 points with SS = 10 for both samples
2) a sample mean difference of 5 points with SS = 10 for both samples
3) a sample mean difference of 10 points with SS = 20 for both samples
4) a sample mean difference of 5 points with SS = 20 for both samples