Question: Researchers sought to assess the effect of various types of music on agitation levels in patients in the early and middle stages of Alzheimer's disease. They selected patients for the study based on their stage of Alzheimer's disease, and tested three forms of music: easy listening, Mozart, piano interludes. While these patients listened to music, researchers recorded the level of agitation they expressed (higher score=higher agitation). Scores are below. Calculate and interpret an ANOVA to assess if these two factors affect agitation levels (use a = 0.01). (Total: 15 pt)

1. Calculate group means and complete the ANOVA table for these data. (4 pt)
2. Graph your findings (means). (3 pt)
3. Are there any significant main effects or an interaction effect (use a = 0.01). (3 pt)
4. Interpret statistical results (what can we conclude, not conclude, suggest). (5 pt)

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