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

question 49

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. = 36 + 0.8x₁ - 1.7x₂
Also provided are SSR = 60 and SST = 180.
-Refer to Exhibit 16-4. The degrees of freedom associated with SSR are

• A)3
• B)33
• C)32
• D)30

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Definitions:

N-butyl Iodide

An organic compound with the chemical formula CH3(CH2)3I, used in organic synthesis.

Carbocation

A positively charged ion (cation) in which the charge is on a carbon atom, often an intermediate in organic reactions.

Carbanion

An organic ion in which a carbon atom has three bonds and bears a negative charge, often an intermediate in organic reactions.

Free Radical

Highly reactive atoms or molecules with unpaired electrons, involved in a variety of chemical processes including polymerization and combustion.