E Output4 [Document4] 1 / 2 50% + T-Test Group Statistics studies 9+ hours a week N Mean Sid. Deviation time 1 delinquency scale B or fewer hours 881 28.99 40.610 9+ hours 333 19.81 34.909 Group Statistics studies 9+ hours a week Sid. Error Mean time 1 delinquency scale 8 or fewer hours 1.368 9+ hours Independent Samples Test Levene's Test for Equality of t-test for Variances Equality of Sig. ime 1 delinquency scale Equal variances assumed 24.146 <.001 equal variances not assumed independent samples test t-test for equality of means significance one-sided p two-sided time delinquency scale _equal c.001 confidence sid. error erval the mean difference lower page interval upper effect sizes standardizer estimate cohen d .361 .361e output4 terval .. . hedges correction glass delta used in estimating uses pooled standard deviation. devi sample deviation control group.>