Total usual hrs. w Cohen's d 20.573 -.252 -.451 -.052 current Hedges' correction 20.731 -.250 -.447 -.052 a. The denominator used in estimating the effect sizes. Cohen's d uses the sample standard deviation. Hedges' correction uses the sample standard deviation, plus a correction factor. T-Test One-Sample Statistics tis Std. Error st N Mean Std. Deviation Mean ec Total usual hrs. worked 1129 39.35 15.071 448 current Past year, frequency of 1716 4.10 2.247 054 drinking alcohol One-Sample Test Test Value = 40 95% Confidence Interval of the Significance Mean Difference df One-Sided p Two-Sided p Difference Lower Upper Total usual hrs. worked -1.460 1128 072 .145 -.655 1.53 23 current Past year, frequency of -661.702 1715 .000 .000 -35.898 -36.00 -35.79 drinking alcohol One-Sample Effect Sizes 95% Confidence Interval Standardizera Point Estimate Lower Upper Total usual hrs. worked Cohen's d 15.071 -.043 -.102 015 current Hedges' correction 15.081 -.043 -.102 015 Past year, frequency of Cohen's d 2.247 -15.974 -16.510 -15.437 drinking alcohol Hedges' correction 2.248 -15.967 -16.503 -15.430 a. The denominator used in estimating the effect sizes. Cohen's d uses the sample standard deviation. Hedges' correction uses the sample standard deviation, plus a correction factor. IBM SPSS Statistic 7.170 NOV ... 29 O ul T MacBook Air 888 DII DO F2 F3 F4 F5 F6 F7 F8 @ # $ % & N 3 4 5 6 8