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 b1.
Definitions:
B2B
Business-to-Business, referring to transactions or strategies between two or more businesses rather than between businesses and individual consumers.
Buying Decisions
The process by which individuals or organizations choose whether to purchase, what to purchase, and from whom to purchase, based on factors like needs, preferences, and financial resources.
Committees
Committees are groups of individuals brought together to make decisions or advise on specific matters within an organization, often with a specific focus or expertise.
Buying Center
A group of individuals in a company who are responsible for making purchasing decisions.
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