Answer Happy

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. Risk 12 26 11 57 28 50 17 32 37 15 22 36 15 48 14 36 8 34 3 39 Age 7 60 59 86 59 75 6 78 80 78 10 印 7 60 2 65 82 1 60 57 76 56 71 70 67 77 82 61 Systolic Blood Pressure 150 165 155 170 196 189 155 120 135 98 152 173 135 209 199 119 166 125 117 208 Smoker No No No Yes Yes Yes Yes No No No No Yes Yes Yes No Yes No No No Yes
(a) Develop an estimated multiple regression equation that relates risk of a stroke to the person's age, systolic blood pressure, and whether the person is a smoker. Let x₁ represent the person's age. Let x2 represent the person's systolic 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) = X1 + X2 + (b) Is smoking a significant factor in the risk of a stroke? Explain. Use a 0.05 level of significance. The input in the box below will not be graded, but may be reviewed and considered by your instructor. blank blank X3 (c) What is the probability of a stroke over the next 10 years for Art Speen, a 69-year-old smoker who has a systolic blood pressure of 170? If required, round your answer to two decimal places. Do not round intermediate calculations. What action might the physician recommend for this patient? The input in the box below will not be graded, but may be reviewed and considered by your instructor. blank (d) An insurance company will only sell its Select policy to people for whom the probability of a stroke in the next ten years is less than .01. If a smoker with a systolic blood pressure of 230 applies for a Select policy, under what condition will the company sell him the policy if it adheres to this standard? 30
(e) What other factors could be included in the model as independent variables? Choose the correct answer below. (i) Family History of Stroke (ii) Weight/obesity (iii) Gender (iv) All of the above Select your answer -