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

question 117

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 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:

Productive Efficiency

A situation in which an economy or entity can no longer produce additional amounts of a good without lowering the production level of another product.

Substitute Goods

Products or services that can be used in place of each other, having a positive cross-elasticity of demand.

Productive Efficiency

A situation in which a good or service is produced at the lowest possible cost.

Quantity of Goods

The total number of physical units of a product or commodity that are available in the market.