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0 A 10-year study conducted by the American Heart Association provided data on how age, systolic blood pressure, and smoking relate to the risk of strokes. Data from a portion of this study follow. Risk is interpreted as the probability (times 100) that a person will have a stroke over the next 10-year period. For the smoker variable, 1 indicates a smoker and indicates a nonsmoker Risk Smoker Age 86 16 Blood Pressure 163 148 1 35 68 1 12 86 199 1 59 80 172 0 38 76 170 1 53 78 0 103 99 20 88 1 39 62 150 1 108 0 41 23 70 78 215 0 40 52 146 1 40 58 207 1 73 139 1 28 67 27 68 200 0 56 124 1 34 54 192 28 74 0 175 200 37 0 70 72 63 196 11 31 0 188 1 a. Develop an estimated regression equation that can be used to predict the risk of stroke given the age and blood pressure level Enter negative value negative number. Use Table 4 in Appendix B. The regression equation is to 4 decimals) MacBook Air
6 х a. Develop an estimated regression equation that can be used to predict the risk of stroke given the age and blood pressure level. Enter negative values negative number. Use Table 4 in Appendix B. The regression equation is to 4 decimals) AZ Rikk -0.016: -0170 Age + 4.0040 Blood Pressure .4778 R? 2621 (to 4 decimals) (ta decimale) (to 4 decimais) R-qaj - 1238 Analysis of Variance SOURCE SS Ns F p-value (to 2 decimals) (to 2 decimals) (to 2 decimals) (to decimals) DF Regression ® ® $$ Residual Total 3 D. Consideradding two independent variables to the model developed in part of the intercen beweenager whether the person smoker Develop an estimates regression equation in these four cependent reverende Use Table 4 in Apendi The regression equation is to decimals) Ape + Blood Pre+ Smoker to decimal
b. Consider adding two independent variables to the model developed in part (), one for the interaction between age and blood pressure level and the other for whether the person is a smoker. Develop an estimated regression equation using these four independent variables. Enter negative ale s negative number Use Table 4 in Appende The regression equation is (to 4 decimals) AZ Risk = + 3 Age + Blood Pressure + Smoket AgeBlood Press R $$ (to 4 decimals) to é decimale) (to 4 decimals) R-s adja Analysis of Variance SOURCE DF SS MS P"value (to 2 decimals) (to 2 decimals) (to 2 decimals) to decimals) 3 3 Regression Residual > 3 33 Total CAL 0.05 level of significance, best to see whether the son of the interaction term and the role wale control or to the regression equation developed in part (a). Usein Append What is the value of the test statistic (to 2 decimal) P-value is Select your answer so the of the two pendentemente