d. The last variate, ClinClass, represents the classification of each patient according to the 1979 medical criteria into one of three groups: 1 = "Overt Diabetic", 2 = "Chemical Diabetic", and 3 = "Normal". i. (4 marks) Construct a back to back density line-up plot to assess whether the normal and diabetic (chemical and overt combined) SSPG values come from the same distribution. Use set . seed (3124159) and show your code. What conclusions do you draw? ii. Grad students, bonus undergraduates (8 marks) Consider the following code: data