Explain and analyze the following job analysis methods

Questionnaires

Observation

Interviews

Employee recording

Combination of methods

Risk 24 12 24 13 56 28 51 18 31 37 15 22 36 15 48 15 36 8 34 3 37 Age 57 67 58 86 59 76 56 78 80 78 71 70 67 77 60 82 66 80 62 59 Blood Pressure 152 163 155 177 196 189 155 120 135 98 152 173 135 209 199 119 166 125 117 207 Smoker No No No Yes No Yes Yes No Yes No No Yes Yes Yes No Yes No Yes No Yes 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. Click on the datafile logo to reference the data. DATA file Risk 12 24 13 56 28 51 18 31 37 15 22 36 15 48 15 36 8 34 3 37 Age 57 67 58 86 59 76 56 78 80 78 71 70 67 77 60 82 66 80 62 59 Systolic Blood Pressure 152 163 155 177 196 189 155 120 135 98 152 173 135 209 199 119 166 125 117 207 Smoker No No No Yes No Yes Yes No Yes No No Yes Yes Yes No Yes No Yes 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 x 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. (c) What is the probability of a stroke over the next 10 years for Art Speen, a 68-year-old smoker who has a systolic blood pressure of 175? 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. (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? (e) What other factors could be included in the model as independent variables? (i) Family History of Stroke (c) What is the probability of a stroke over the next 10 years for Art Speen, a 68-year-old smoker who has a systolic blood pressure of 175? 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. (d) An insurance company will only sell its Select policy to people for whom the probability of a stroke in the next ten years 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? (e) What other factors could be included in the model as independent variables? (i) Family History of Stroke (ii) Weight/obesity (iii) Gender (iv) All of the above - Select your answer -