Exhibit 13-2
a Regression Model Between Sales Y in $1,000) $\hat { Y }$

question 97

Multiple Choice

Exhibit 13-2
A regression model between sales Y in $1,000) , unit price X1 in dollars) and television advertisement X2 in dollars) resulted in the following function:
$\hat { Y }$ =7-3X1+5X2
For this model SSR = 3500, SSE = 1500, and the sample size is 18.
-Refer to Exhibit 13-2. The coefficient of the unit price indicates that if the unit price is

• A) increased by $1 holding advertising constant), sales are expected to increase by $3
• B) decreased by $1 holding advertising constant), sales are expected to decrease by $3
• C) increased by $1 holding advertising constant), sales are expected to increase by $4,000
• D) increased by $1 holding advertising constant), sales are expected to decrease by $3,000

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Definitions:

Foraging Time

The period spent by an animal searching for and gathering food.

Territoriality

Behavior in animals that involves the establishment and defense of a territory to claim exclusive use and resources.

Dominance

An attribute of an allele that masks the effect of a recessive allele paired with it in the phenotype of the organism.

Sexual Behavior

Actions related to how organisms reproduce, often influenced by biological, psychological, and social factors.