Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means 95% Confidence Interval of the Mean Std. Error Difference F Sig. + df Sig. (2-tailed) Difference Difference Lower Upper SWLS Equal variances 2.986 088 877 71 383 1.43548 1.63625 -1.82711 4.69808 assumed Equal variances not .845 54.782 402 1.43548 1.69902 -1.96974 4.84070 assumedGroup Statistics Std. Error Instructor N Mean Std. Deviation Mean SWLS 1 42 23.5000 6.11775 94399 2 31 22.0645 7.86526 1.41264