Solved

Life Expectancy an Actuary Wanted to Develop a Model to Predict

Question 67

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>1</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>1</sub>. ​ ​
-{Life Expectancy Narrative} Interpret the coefficient b1.

Correct Answer:

verifed

Verified

b1 = 1.79.This tells us for each addition...

View Answer

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

Related Questions

Q62: If all the points for a multiple

Q63: Large values of the Durbin-Watson statistic d

Q64: Real Estate Builder<br> A real estate

Q65: In testing the validity of a multiple

Q66: Life Expectancy<br> An actuary wanted to

Q68: Suppose a multiple regression analysis involving 25

Q69: Student's Final Grade <br>A statistics professor investigated

Q70: A multiple regression model involves 40 observations

Q71: The Durbin-Watson d statistic is used to

Q72: In calculating the standard error of the