Answer Happy

Researchers have sought to examine the effect of various types of music on anxiety levels in patients who are in the early and middle stages of Alzheimer's disease. Patients were selected to participate in the study based on their stage of Alzheimer's disease. The participants in the two different stages of Alzheimer's are not related to each other and their anxiety levels are normally distributed within each group. Three forms of music were tested: heavy metal, smooth jazz and classical music. While listening to music, anxiety levels were recorded for the patients with a high score indicating a higher level of anxiety. Scores are recorded below. Group Heavy Metal Music Smooth Jazz Classical Music 21 9 29 24 12 26 Early Stage Alzheimer's 22 10 30 18 5 24 20 9 26 22 14 15 20 18 18 Middle Stage 25 11 20 Alzheimer's 18 9 13 20 13 19 a. State the null and alternative hypothesis. b. Fill out the ANOVA table and provide the F, df, and p-value for each main effect and the interaction. Variable DF P-Value F MSBetween MSwithin Stage Music Type Stage Music Type What do you conclude about the main effects? Be sure to be specific and provide numerical evidence to back up your claims. If a follow-up test was warranted, be sure to provide the results from the test as well. d. Is there a significant interaction? If so, explain what your interaction results mean.