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:

Intuition

The ability to understand or know something immediately, based on feelings rather than conscious reasoning or factual evidence.

Feasibility

The practicality or possibility of something being accomplished or achieved.

Decision Making

The process of selecting among various alternatives based on the analysis and evaluation of available information.

Working Model

A preliminary version of a product that demonstrates its functionality and features, often used for testing and feedback.