A recent 10-year study conducted by a research team at the Great Falls Medical School was conducted to assess how age, systolic blood pressure, and smoking relate to the risk of strokes. Assume that the following data are from a portion of this study. Risk is interpreted as the probability (times 100) that the patient will have a stroke over the next 10-year period. For the smoking variable, define a dummy variable with 1 indicating a smoker and 0 indicating a nonsmoker. Systolic Risk Age Blood Smoker Pressure 11 58 152 Yes 24 65 163 No 13 58 155 No 56 86 177 Yes 27 59 196 Yes 51 76 189 Yes 18 56 155 Yes 31 78 120 No