Weighing the Evidence Dr.M.predicted that heart rate variability biofeedback would reduce depressive symptoms.She randomly assigned depressed patients to either receive 2 hours of heart rate variability training or 2 hours of yoga instruction and measured changes in Beck Depression Inventory scores.Since the heart rate variability group improved more than the yoga group, she A)rejected the alternative hypothesis. B)accepted the null hypothesis. C)rejected the research hypothesis. D)rejected H₀_.

Question

Quizplus · Accepted Answer

The correct choice involves recognizing that Dr. M's findings support her prediction that heart rate variability biofeedback would reduce depressive symptoms more than an alternative treatment (yoga), leading her to reject the null hypothesis (which posits no difference or effect). The garbled option D implies a rejection of the null hypothesis, consistent with her findings.