Comparing Means: t-test a. Develop Research Question to Compare Two Sample Means: I want to determine if the high school students who took a review class got better scores on their SAT Exams than the students who did not take the review class. Therefore, I will run a t-test and interpret the results: T-Test Group Statistics review N Mean Std. Deviation Std. Error Mean SAT 1 12 76.1667 14.86811 4.29205 2 8 72.7500 12.33752 4.36197 Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means F Sig. t df Sig. (2-tailed) Mean Difference Std. Error Difference 95% Confidence Interval of the Difference Lower Upper SAT Equal variances assumed .162 .692 .537 18 .598 3.41667 6.36211