Solved

Life Expectancy an Actuary Wanted to Develop a Model to Predict

Question 118

Essay

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 (x1),the cholesterol level (x2),and the number of points that the individual's blood pressure exceeded the recommended value (x3).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 + 1.79x1− 0.021x2− 0.061x3 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<sub>1</sub>),the cholesterol level (x<sub>2</sub>),and the number of points that the individual's blood pressure exceeded the recommended value (x<sub>3</sub>).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<sub>1</sub>− 0.021x<sub>2</sub>− 0.061x<sub>3</sub> ​ S = 9.47 ​ R−Sq = 22.5% ANALYSIS OF VARIANCE ​ ​ -{Life Expectancy Narrative} Interpret the coefficient b<sub>2</sub>. ​ S = 9.47 ​ R−Sq = 22.5% ANALYSIS OF VARIANCE 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<sub>1</sub>),the cholesterol level (x<sub>2</sub>),and the number of points that the individual's blood pressure exceeded the recommended value (x<sub>3</sub>).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<sub>1</sub>− 0.021x<sub>2</sub>− 0.061x<sub>3</sub> ​ S = 9.47 ​ R−Sq = 22.5% ANALYSIS OF VARIANCE ​ ​ -{Life Expectancy Narrative} Interpret the coefficient b<sub>2</sub>. ​ ​
-{Life Expectancy Narrative} Interpret the coefficient b2.

Correct Answer:

verifed

Verified

b2 = −0.021.This tells us that for each a...

View Answer

Unlock this answer now
Get Access to more Verified Answers free of charge

Related Questions

Q113: The coefficient of determination R<sup>2</sup> measures the

Q114: If the value of the Durbin-Watson statistic,d,satisfies

Q115: An adverse effect of multicollinearity is that

Q116: The range of the values of the

Q117: When an additional explanatory variable is introduced

Q119: Student's Final Grade <br>A statistics professor investigated

Q120: When an additional explanatory variable is introduced

Q121: For a multiple regression model the following

Q122: To use the Durbin-Watson test to test

Q123: In a multiple regression analysis,if the model