7. Are there significant differences in the amount of time spent in active-duty military service between two groups: those who have attempted suicide and those who have not? T-Test Group Statistics SUICIDE IF TIRED OF LIVING N AGE OF YES Mean 374 46.74 Std. Deviation Std. Error Mean 18.170 RESPONDENT NO 1768 46.86 17.618 940 .419 Levene's Test for Equality of Variances Independent Samples F Sig. t df One AGE OF RESPONDENT Equal variances assumed Equal variances not assumed .811 .368 -115 2140 -.112 531.682 Independent Samples Effect Sizes 95% Confidence Standardize Point Interval C Estimate Lower Upper AGE OF RESPONDENT Cohen's d 17.716 -.007 -.118 .105 Hedges' 17.722 -.007 -.118 .105 correction Glass's delta 17.618 -.007 -.118 .105 a. The denominator used in estimating the effect sizes. Cohen's d uses the pooled standard deviation. Hedges' correction uses the pooled standard deviation, plus a correction factor. Glass's delta uses the sample standard deviation of the control (i.e., the second) group.