Analysis scenario

1. Researchers conducted a longitudinal study to examine the health behaviors and health status of men in 1958. After 10 years of following up the study subjects, the following research questions emerged: (Use the xxx data file)
   1. How years of education (variable xxx ) differ between those who were alive 10 years after the study stated and those who were not (variable xxx ). Use a graph to exam and display your data. Which graph would be appropriate to use? Write a summary of your results following the graph you generated.
   2. Researchers wished to know if those who have coronary heart disease event smoked more cigarettes per day (variable xxx) than those who have no coronary heart disease (variable xxx ). Assume the number of cigarettes smoked per day is normally distributed. Based on your analyses write a summery which should include but not limited to the following:
      1. What would be your hypotheses?
      2. What test did you use? Why the test you used is appropriate?
      3. Does the difference in cigarettes smoked per day between those who had coronary heart disease event and those with no coronary heart disease appear to be large and significant?
2. Use the xxxx data file to look at the overall changes between 1993 and 1994 in graduation rates (variables xxxx and xxx ). Write a summery based on your analyses that includes but not limited to the following:
   1. What would be your hypotheses?
   2. What test did you use? Why the test you used is appropriate?
   3. Does it look like the school system is improving in graduation rates?
   4. Was the graduation rates increased in 1994 or decreased? Is the change significant?

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