t-test output   

Source of Variations df Sum of Squares Mean Squares F Ratio Probability   h² hp² w²
Between Groups 1 93.25685 93.25685 5.432 0.0228  * 0.075 0.075 0.057
Within Groups 67 1150.361 17.16956
Total       68 1243.617 18.28849
Group I Group II Pooled S.E.D. CD 95% Estimation of Effect Size
n 36 33 69 Cohen's d 0.569
Mean µ 72.2072 74.5345 73.3203 0.9986 1.9932 Percentile Standing 71.50%
Std. Dev. 3.4005 4.8271 Non-overlap % 36.60%
Std. Error 0.5668 0.8403 Hedges g 0.562
Test Value (µ1-µ2) +/- Lower Limit Upper Limit
T-Test 2.3306  -2.3273 1.9932 -4.3205 -0.3341 ES Correlation 0.274
Modified T-Test 2.2962  -2.3273 2.0624 -4.3897 -0.2649
Variance Ratio Test 2.015 0.0225   (F Prob) 1.0162 3.9954 Variances are not the same in 2 groups
Levene's Test 3.0939 0.0832   (F Prob)
Brown-Forsythe Test 2.942 0.0909   (F Prob)
MANN WHITNEY Test 402 0.0104   Prob (1 tailed) -4.32 -0.42