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. Also provided are SSR = 60 and SST = 180.
-Refer to Exhibit 13-12. From the above function, it can be said that the life expectancy of rats that were given agent X₂ is

Question

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.

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 (X<sub>1</sub>) , and whether or not agent X<sub>2</sub> (a proposed life extending agent) was added to the rats diet (X<sub>2</sub> = 0 if agent X<sub>2</sub> was not added, and X<sub>2</sub> = 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 13-12. From the above function, it can be said that the life expectancy of rats that were given agent X<sub>2</sub> is A) 1.7 months more than those who did not take agent X<sub>2</sub> B) 1.7 months less than those who did not take agent X<sub>2</sub> C) 0.8 months less than those who did not take agent X<sub>2</sub> D) 0.8 months more than those who did not take agent X<sub>2</sub>

Also provided are SSR = 60 and SST = 180.
-Refer to Exhibit 13-12. From the above function, it can be said that the life expectancy of rats that were given agent X₂ is

Quizplus · Accepted Answer

The function indicates that agent X₂ reduces the life expectancy of rats by 1.7 months compared to those who did not take it.

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