For all hypothesis tests, one must (a) indicate H, and H,, (b) interpret whether to reject Ho or not reject Ho, and (c) indicate the effect size or explained variance . The degree of water absorption of 8 tea towels is measured first when they are new and then after they have been washed 3 times. Do the tea towels have better absorbency (a - 0.05) after being washed (the higher the value, the better the absorbency)? Paired Samples Statistics Mean. error Average N Standard deviation standard Pair 1 before 34.38 8 1.408 498 after 37.00 8 2.390 845 Paired Samples Test Apparent differences Signification Confidence interval of Mean 95% difference error Mean Ecart type standard Lower Superior bilateral Do before and after -2.625 1.408 498 -3.802 -1.448 -5:274 17 <.001 .001 effect sizes for paired samples standardized confidence interval point on estimation lower superior d of cohen pair before-after correction the hedges has. denominator used to estimate uses sample standard deviation mean difference. difference plus a factor>