For this question, you will take the role of a researcher preparing to present a statistical analysis of mental health prevalence rates obtained from the Institute of Health Metrics and Evaluation (IHME)

The research question for this question is: 'Is there a difference in the prevalence of major depression between 15 - 49 and 50 - 69 age groups?'

(a)

For this question part, you are required to write

• an appropriate title
• distribution plots of the data sets that you have selected for your analysis, correctly labelled
• means, standard deviations (SDs) and results of the tests for normality and equality of variance
• the results of the appropriate statistical test that you selected
• the source of data, a conclusion, and statement of whether your analysis supports or refutes the null hypothesis.

(b)

For this question part, you are required to write

• the aim of the study
• the null hypothesis that you have tested
• an explanation of the data shown on the slide (means and statistical analyses)
• details of the statistical test that you have chosen and the rationale that you used to select this test
• a conclusion based on the findings of your statistical analysis
• whether you would reject or accept the null hypothesis based on your analysis
• a citation and reference to the source of the data

Null hypothesis 'there is NO difference in the prevalence of major depression between 15 - 49 and 50 - 69 age groups'

Which statistical analysis test would be best suited to the data below?

15-49 year olds