Exhibit 13-12
in a Laboratory Experiment, Data Were Gathered on the Life

question 81

Multiple Choice

Exhibit 13-12
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.
$\hat { Y }$ =36+0.8X1 - 1.7X2
Also provided are SSR = 60 and SST = 180.
-Refer to Exhibit 13-12. The model

• A) is significant
• B) is not significant
• C) Not enough information is provided to answer this question.
• D) None of these alternatives is correct.

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Definitions:

Temperament

The aspects of an individual's personality, such as introversion or extroversion, that are believed to be innate rather than learned.

Differentiating

The process of distinguishing or identifying differences between two or more things or people.

Visual Cliff

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Good-natured

Possessing a pleasant, friendly, and easygoing personality.