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

Question

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.

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 (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 16-4. The life expectancy of a rat that was given 3 units of protein daily, and who took agent X<sub>2</sub> is A) 36.7 B) 36 C) 49 D) 38.4

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

Quizplus · Accepted Answer

Using the provided regression model: Y = 16.3 + 3.5(X₁) - 13(X₂) Substituting X₁ = 3 and X₂ = 1: Y = 16.3 + 3.5(3) - 13(1) = 36.7 Therefore, the life expectancy of the rat would be 36.7 months.

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