(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 67-year-old smoker who has a systolic blood pressure of 176? 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 condition will the company sell him the policy if it adheres to this standard? 27
(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 67-year-old smoker who has a systolic blood pressure of 176? 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 condition will the company sell him the policy if it adheres to this standard? 27
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:(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 67-year-old smoker who has a systolic blood pressure of 176?
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?
27
(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
Transcribed Image Text: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 O indicating a nonsmoker.
Systolic
Blood
Risk
Age
Smoker
Pressure
10
56
145
No
25
55
160
No
10
60
156
No
58
88
175
Yes
27
60
195
Yes
49
75
185
Yes
15
55
156
Yes
32
77
120
No
35
80
135
No
15
78
98
No
22
71
152
No
36
70
173
Yes
15
67
135
No
48
77
209
No
14
60
199
No
36
82
119
Yes
8
65
166
No
34
82
125
No
3
61
117
No
39
60
208
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)
+
X2 +
X3
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