A researcher conducts an intervention to determine the effect a mindfulness on mood. Higher scores reflect better mood. The experimental group received 5 weekly mindfulness meditation treatment sessions. The control group met with a therapist for 5 session to receive educational information. The researcher conducts a t test to determine if there are significant differences in mood between groups. See output below Mood Treatment Group Active Control Group Statistics Guided Meditation Treatment N Mean Std. Deviation Std. Error Mean 85 45.87 83 48.87 5.721 4.708 .621 .517 Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means 95% Confidence Interval of the F Sig. t df Significance One-Sided p Two-Sided p Mean Difference Std. Error Difference Difference Lower Upper Mood Equal variances assumed 5.239 .023 Equal variances not assumed -3.703 -3.711 166 161.392