Part II a. Mann Whitney U test (4 points)

For this part of the assignment, you will compare the quality of life (QOL_post)

between patients (older than 70 years only) in the drug treatment group and patients

in the drug + behavior treatment group after a 6-week treatment. The data to be

used for this part of the assignment are saved as 'HW Mann Whitney.sav'.

1. A nonparametric Mann Whitney U test will be used to compare the two

independent means. Write down the null and alternative hypotheses (1 point).

2. Provide descriptive statistics for QOL after treatment (QOL_post) (1 point).

3. Report the p value and state the hypothesis resolution (1 point).

4. Document your results (1 point).

Part II b. Kruskal-Wallis test (6 points).

For this part of the assignment, you will compare the post-treatment quality of life

(QOL_post) for the patients (older than 70 years) with LUTS across all three treatment

groups: drug treatment, behavior treatment, and drug + behavior treatment. The data to

be used for this part are located in a file called 'HW Kruskal Wallis.sav.

1. A nonparametric Kruskal-Wallis test will be used to compare three independent

means. Write down the null and alternative hypotheses (1 point).

2. Provide descriptive statistics for QOL after treatment (QOL_post) (1 point).

3. Report the p value and state the hypothesis resolution (1 point).

4. Report the post hoc analysis (2 points).

5. Document your results (1 point)./nPart II c. Wilcoxon Signed Ranks Test (4 points).

For this final section of the assignment, you must evaluate whether the quality of life

increased after the treatment, for the patients (older than 70 years) in the drug +

behavior treatment group only. The data to be used for this analysis are saved as

'HW Wilcoxon Signed rank.sav'.

1. A nonparametric Wilcoxon Signed Ranks Test will be used to compare the paired

means. Write down the null and alternative hypotheses (1 point).

2. Provide descriptive statistics for QOL before (QOL_pre) and after treatment

(QOL_post) (1 point).

3. Report the p value and state the hypothesis resolution (1 point).

4. Document your results (1 point).