Akhil Choudhary, Numerade Educator

02:29

Intro Stats / AP Statistics

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
Age
Systolic
Blood
Pressure
Smoker
12
57
152
No
24
67
163
No
13
58
155
No
56
86
177
Yes
28
59
196
No
51
76
189
Yes
18
56
155
Yes
31
78
120
No
37
80
135
Yes
15
78
98
No
22
71
152
No
36
70
173
Yes
15
67
135
Yes
48
77
209
Yes
15
60
199
No
36
82
119
Yes
8
66
166
No
34
80
125
Yes
3
62
117
No
37
59
207
Yes
A) Develop an estimated 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
age, x2 represent blood
pressure, x3 represent whether the
person is a smoker, and y represent risk. Round
your numerical values to four decimal places.)
D. An insurance company will only sell its Select policy to
people for whom the probability of a stroke in the next 10 years is
less than 0.01. If a smoker with a systolic blood pressure
of 220 applies for a Select policy, under what condition
will the company sell him the policy if it adheres to this
standard? (Round your answer to two decimal places.)
This person must be no more than______________________ old
to qualify for the Select policy.