THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
An actuary wanted to develop a model to predict how long individuals will live.After consulting a number of physicians,she collected the age at death (y),the average number of hours of exercise per week (x 1 ),the cholesterol level (x 2 ),and the number of points that the individual's blood pressure exceeded the recommended value (x 3 ).A random sample of 40 individuals was selected.The computer output of the multiple regression model is shown below.
THE REGRESSION EQUATION IS:
= 55.8 + 1.79x 1 - 0.021x 2 - 0.016x 3

S = 9.47 R-Sq = 22.5%
ANALYSIS OF VARIANCE

-Is there enough evidence at the 5% significance level to infer that the cholesterol level and the age at death show a negative linear relationship?

Question

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
An actuary wanted to develop a model to predict how long individuals will live.After consulting a number of physicians,she collected the age at death (y),the average number of hours of exercise per week (x 1 ),the cholesterol level (x 2 ),and the number of points that the individual's blood pressure exceeded the recommended value (x 3 ).A random sample of 40 individuals was selected.The computer output of the multiple regression model is shown below.
THE REGRESSION EQUATION IS:  
= 55.8 + 1.79x 1 - 0.021x 2 - 0.016x 3 
  
S = 9.47 R-Sq = 22.5%
ANALYSIS OF VARIANCE
 
-Is there enough evidence at the 5% significance level to infer that the cholesterol level and the age at death show a negative linear relationship?

Quizplus · Accepted Answer

The Answer of THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
An actuary wanted to develop a model to predict how long individuals will live.After consulting a number of physicians,she collected the age at death (y),the average number of hours of exercise per week (x 1 ),the cholesterol level (x 2 ),and the number of points that the individual's blood pressure exceeded the recommended value (x 3 ).A random sample of 40 individuals was selected.The computer output of the multiple regression model is shown below.
THE REGRESSION EQUATION IS:  
= 55.8 + 1.79x 1 - 0.021x 2 - 0.016x 3 
  
S = 9.47 R-Sq = 22.5%
ANALYSIS OF VARIANCE
 
-Is there enough evidence at the 5% significance level to infer that the cholesterol level and the age at death show a negative linear relationship?