Question

A recent 10-year study conducted by a research team at the Medical School was conducted to assess how age, 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 Risk Age Pressure Smoker S7 150 165 155 170 196 189 155 120 135 98 152 173 135 12 59 57 28 S9 76 56 78 17 37 15 78 71 36 1S 67 199 119 166 125 36 82 61 60 No 208 (a) Develop an estimated multiple regression equation that relates risk of a stroke to the person's age, blood pressure, and whether the person is a smoker Let x1 represent the person's age. Let x2 represent the person's blood pressure. Let x3 represent whether the person is a smoker If required, round your answers to three decimal places. For subtractive or negative numbers use a minus sign even if there is a sign before the blank. (Example: -300) 97.199 7.440 ⓥ 1.210 x1 + 0.237 (b) Is smoking a significant factor in the risk of a stroke? Explain. Use a 0.0S level of significance. The input in the box below will not be graded, but may be reviewed and considered by your instructor (c) What is the probability of a stroke over the next 10 years for Art Speen, a 6S-year-old smoker who has a blood pressure of 172? If required, round your answer to two decimal places. 29.61

Answer 1

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