Answer this question using the data set exercise.csv from LumiNUS. This set of 195 data points provides the age, average number of hours of exercise per week and the chance of developing a particular disease, for each person. a) Describe the association between the chance of developing a disease and the average number of hours of exercise per week using suitable tools. If a person exercises 6 hrs per week on average, what is the predicted average chance of developing a disease? What if a person exercises 9 hrs per week on average? b) Comment on any similarity or difference in the association between the chance of developing a disease and the average number of minutes of exercise per week with the association that you obtained in part (a). Justify your answer. c) Investigate the correlation between the chance of developing a disease and the average number of hours of exercise per week, for people below 50 years old and for people at least 50 years old separately. Comment on any similarity or difference in the relationship for the different age subgroups, as compared with that obtained in (a)