Reference no: EM1322284
Information is presented on the relationships of systolic blood pressure (dependant variable, in mmHg) to age (X1, in years), weight (X2, coded 1 for overweight, 0 for normal), physical activity level (X3, coded 1 for active, 0 for sedentary) and smoking history (X4, coded 1 for current or ex-smoker, 0 for never smoked) among 259 subjects. An abbreviated ANOVA table based on the regression of systolic blood pressure on all four independent variables is shown below:
|
Source
|
DF
|
SS
|
|
X1
|
1
|
7146.40
|
|
X2 | X1
|
1
|
1750.73
|
|
X3 | X1, X2
|
1
|
667.26
|
|
X4 | X1, X2, X3
|
1
|
406.05
|
|
Residual
|
245
|
73581.52
|
a) Can you test the significance of the relationship between physical activity level and systolic blood pressure, adjusting for age, weight, and smoking history, given the ANOVA table above? If so, carry out the test and interpret the result. If not, how should the variables be ordered so that the test can be performed?
b) Can you test the significance of the relationship between physical activity level and systolic blood pressure, adjusting for age, and weight, given the ANOVA table above? If so, carry out the test and interpret the result. If not, how should the variables be ordered so that the test can be performed?
|
What is the wire''s linear charge density
: An air molecule is moving at a speed of 455 m/s. How many meters would the molecule move throughout 7ms (milliseconds) if it didn't collide with any other molecules.
|
|
Find average velocity over the trip
: A horse is capable of moving at four different speeds: walk (1.9 m/s), trot (5.0 m/s), canter (7.0 m/s), and gallop (12 m/s). Ann is learning how to ride a horse. She spends 15 minutes riding at a walk and 1.8 minutes at each other speed.
|
|
Finding the regression equation
: What is the predicted GPA if a person watches 12 hours of television per week?
|
|
Identify the various cyber crimes
: Identify the various cyber crimes that would apply in a business setting? Provide a scenario by way of example that will demonstrate to your colleagues a situation that might occur and explain how it should be managed to protect the business.
|
|
Anova table for partial regression model
: Can you test the significance of the relationship between physical activity level and systolic blood pressure, adjusting for age, and weight, given the ANOVA table above?
|
|
What are the values of the following products
: A charge of -4 nC is at the origin and a second charge of 14 nC is at x = 3.00 m. Find out the magnitude and direction of the electric field halfway in between two charges.
|
|
The difference between mass and weight
: What is the difference between mass and weight? On earth, what is the weight of a 1 kg mass?
|
|
Background on the types of cyber crime
: Identify the various cyber crimes that would apply in a business setting? Provide a scenario by way of example that will demonstrate to your colleagues a situation that might occur and explain how it should be managed to protect the business.
|
|
What distance does the car cover in the first 4.0 seconds
: The distance to the Andromeda Galaxy is estimated at about 2 ´ 106 light years. A light year is distance travelled by light in one year; if the speed of light is 3 ´ 108 m/s, about how far is it from our galaxy to Andromeda? (1 year = 3.15 ´ 107 s..
|