\fT-Test One-Sample Statistics N Mean Std. Deviation Std. Error Mean Price 909 13382.04 2997.556 99.423 Odometer 909 46495.00 32400.612 1074.660 One-Sample Test Test Value = 0 95% Confidence Interval of the Significance Mean Difference df One-Sided p Two-Sided p Difference Lower Upper Price 134.597 908 000 000 13382.039 13186.91 13577.16 Odometer 43.265 908 <.001 one-sample effect sizes confidence interval standardizer point estimate lower upper price cohen d hedges correction odometer a. the denominator used in estimating sizes. uses sample standard deviation. deviation plus a factor>