Dr. Casey was interested in treatments for insomnia, and whether different treatments would improve daytime fatigue. She compared the differences on daytime fatigue scores (measured with an interval like scale) among three independent and mutually exclusive groups who received different treatments for insomnia. Since the assumptions of the test were met, she ran a one-way ANOVA. Overall, she found a statistically significant difference among groups (p=.003). The next step for Dr. Casey is to:

• A.Report that the treatments were all different.
• B.Run a post-hoc test such as the Tukey or Scheffe to determine which groups differed.
• C.Recommend a change in the treatment of insomnia based on her findings
• D.Re-run the data using the Kurskal-Wallis test.