Life Expectancy
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 y = 55.8 + 1.79x 1 − 0.021x 2 − 0.061x 3 S = 9.47 R−Sq = 22.5% ANALYSIS OF VARIANCE
-{Life Expectancy Narrative} Is there sufficient evidence at the 5% significance level to infer that the number of points that the individual's blood pressure exceeded the recommended value and the age at death are negatively linearly related?

Question

Life Expectancy
 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 y = 55.8 + 1.79x 1 − 0.021x 2 − 0.061x 3  ​ S = 9.47 ​ R−Sq = 22.5% ANALYSIS OF VARIANCE  ​ ​
-{Life Expectancy Narrative} Is there sufficient evidence at the 5% significance level to infer that the number of points that the individual's blood pressure exceeded the recommended value and the age at death are negatively linearly related?

Quizplus · Accepted Answer

The Answer of  Life Expectancy
 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 y = 55.8 + 1.79x 1 − 0.021x 2 − 0.061x 3  ​ S = 9.47 ​ R−Sq = 22.5% ANALYSIS OF VARIANCE  ​ ​
-{Life Expectancy Narrative} Is there sufficient evidence at the 5% significance level to infer that the number of points that the individual's blood pressure exceeded the recommended value and the age at death are negatively linearly related?

Life Expectancy an Actuary Wanted to Develop a Model to Predict