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

question 63

Multiple Choice

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 p-value for testing the significance of the regression model is

• A)less than 0.01
• B)between 0.01 and 0.025
• C)between 0.025 and 0.05
• D)between 0.05 and 0.10

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