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 $x_1$ represent the person's age.
Let $x_2$ represent the person's systolic blood pressure.
Let $x_3$ 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)
? + $x_1$ + $x_2$ + $x_3$
Is smoking a significant factor in the risk of a stroke? Explain. Use a 0.05 level of significance.
We -select your answer- reject the hypothesis that $\beta_3$ = 0, implying there -select your answer- sufficient evidence to conclude that smoking is a significant factor in the risk of a stroke.
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 166?
If required, round your answer to two decimal places. Do not round intermediate calculations.
What action might the physician recommend for this patient?
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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?
(I) The person must be at least 30 years old.
(II) With this blood pressure measure, this person cannot qualify for a Select policy.
(III) The person must be 30 years old or younger.
-select your answer-
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
