Exhibit 16-4 In a Laboratory Experiment, Data Were Gathered on the Life

question 71

Multiple Choice

Exhibit 16-4
In a laboratory experiment, data were gathered on the life span (Y in months) of 33 rats, units of daily protein intake (X₁) , and whether or not agent X₂ (a proposed life extending agent) was added to the rats diet (X₂ = 0 if agent X₂ was not added, and X₂ = 1 if agent was added.) From the results of the experiment, the following regression model was developed. Also provided are SSR = 60 and SST = 180.
-Refer to Exhibit 16-4. The life expectancy of a rat that was given 3 units of protein daily, and who took agent X₂ is

• A)36.7
• B)36
• C)49
• D)38.4

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Definitions:

Esteem Needs

Psychological needs in Maslow's hierarchy that include self-esteem, respect from others, and status, contributing to feelings of self-worth and accomplishment.

Need Motivation Theories

Psychological theories that propose people are motivated by the desire to fulfill basic needs such as safety, belonging, and self-esteem.

Content Theories

Theories that explain why people have different needs at different times and how these needs motivate behavior, such as Maslow’s hierarchy of needs, Alderfer’s ERG theory, McClelland’s need theory, and Herzberg’s two-factor theory.

Process Theories

Theories that describe the cognitive processes through which needs are translated into behavior, such as equity theory, expectancy theory, and goal-setting theory.