Examining residuals for groups.
-A medical researcher was interested in determining how systolic blood pressure is
Affected by increased exertion during exercise for a sample of cardiac patients. She
Measured the systolic blood pressure of participants in the study as the speed of the
Treadmill on which they were walking was increased. Below is the scatterplot of the data
For smokers and nonsmokers. How is the relationship between systolic blood pressure
And speed of the treadmill affected by whether or not a participant smokes?
A) Whether or not a participant smokes does not affect the relationship between systolic blood pressure and speed of the treadmill.
B) The regression equation explaining the relationship between systolic blood pressure and speed of the treadmill has a steeper slope for smokers.
C) The systolic blood pressure for nonsmokers is higher than that of smokers.
D) The regression equation explaining the relationship between systolic blood pressure and speed of the treadmill has a steeper slope for nonsmokers.
E) There is a negative linear relationship between smoking and systolic blood pressure.

Question

Examining residuals for groups.
-A medical researcher was interested in determining how systolic blood pressure is
Affected by increased exertion during exercise for a sample of cardiac patients. She
Measured the systolic blood pressure of participants in the study as the speed of the
Treadmill on which they were walking was increased. Below is the scatterplot of the data
For smokers and nonsmokers. How is the relationship between systolic blood pressure
And speed of the treadmill affected by whether or not a participant smokes? 
A) Whether or not a participant smokes does not affect the relationship between systolic blood pressure and speed of the treadmill. 
B) The regression equation explaining the relationship between systolic blood pressure and speed of the treadmill has a steeper slope for smokers. 
C) The systolic blood pressure for nonsmokers is higher than that of smokers. 
D) The regression equation explaining the relationship between systolic blood pressure and speed of the treadmill has a steeper slope for nonsmokers. 
E) There is a negative linear relationship between smoking and systolic blood pressure.

Quizplus · Accepted Answer

The Answer of Examining residuals for groups.
-A medical researcher was interested in determining how systolic blood pressure is
Affected by increased exertion during exercise for a sample of cardiac patients. She
Measured the systolic blood pressure of participants in the study as the speed of the
Treadmill on which they were walking was increased. Below is the scatterplot of the data
For smokers and nonsmokers. How is the relationship between systolic blood pressure
And speed of the treadmill affected by whether or not a participant smokes? 
A) Whether or not a participant smokes does not affect the relationship between systolic blood pressure and speed of the treadmill. 
B) The regression equation explaining the relationship between systolic blood pressure and speed of the treadmill has a steeper slope for smokers. 
C) The systolic blood pressure for nonsmokers is higher than that of smokers. 
D) The regression equation explaining the relationship between systolic blood pressure and speed of the treadmill has a steeper slope for nonsmokers. 
E) There is a negative linear relationship between smoking and systolic blood pressure.

Examining Residuals for Groups