T-Test Group Statistics Std. Std. Error review N Mean Deviation Mean final No 35 61.40 5.802 981 Yes 70 64.21 6.840 .817 Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means 95% Confidence Interval of Sig. (2- Mean Std. Error the Difference F Sig. df tailed) Difference Difference Lower Upper final Equal variances .708 402 -2.087 103 039 -2.814 1.349 -5.489 -. 139 assumed Equal variances not -2.204 78.898 .030 -2.814 1.277 -5.356 -.273 assumed