Problem:
The Texas Public Health Department is conducting a study to examine the relationship between sleep duration and the risk of developing cardiovascular diseases in adults aged 50 and above. They collect data from a sample of participants, recording their average daily sleep duration, categorized into three groups: short sleep (less than 6 hours), adequate sleep (6-8 hours), and long sleep (more than 8 hours). Participants' cardiovascular health is monitored over a five-year period, with incidents of cardiovascular diseases recorded and classified as either "present" or "absent" based on medical evaluations. A. Identify the level of measurement for the variables "average daily sleep duration" and "cardiovascular health" explain your choice, (e.g., nominal, ordinal, interval, ratio), and explain your choice, considering the nature of the variables. B. Formulate null and alternative hypotheses to test whether there is an association between sleep duration and the risk of developing cardiovascular diseases. C. Recommend a suitable statistical test to assess the relationship between sleep duration and cardiovascular disease risk, and provide a detailed rationale based on the level of measurement and research objectives. D. Describe the types of graphs you would use to visualize the data in this study, explaining how these graphs can effectively. Need Assignment Help?