Life Expectancy an Actuary Wanted to Develop a Model to Predict

question 66

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 ​ S = 9.47 ​ R−Sq = 22.5% ANALYSIS OF VARIANCE ​ ​
-{Life Expectancy Narrative} Interpret the coefficient b₃.

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Definitions:

MEGGER

A registered name by Biddle Industries. A high-voltage tester used for testing conductor insulation.

Metallic Conduit

Metallic conduit is a metal pipe or tubing designed to protect electrical wiring and cables, providing a secure pathway and shielding them from damage.

MEGGER

A brand and a generic term for an instrument used to measure insulation resistance in electrical wiring and components.

Metallic Conduit

A protective metal tube used to house and protect electrical wires and cables providing a path for electrical wiring installations.