Question: Exhibit 15-2 A regression model between sales ( y in $1000s), unit price ( x 1 in dollars) and television advertisement ( x 2 in

Exhibit 15-2 A regression model between sales (y in $1000s), unit price (x₁ in dollars) and television advertisement (x₂ in dollars) resulted in the following function: = 7 3x₁ + 5x₂ For this model, SSR = 3500, SSE = 1500, and the sample size is 18. 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 $4000

b. increased by $1 (holding advertising constant), sales are expected to decrease by $3000

c. decreased by $1 (holding advertising constant), sales are expected to decrease by $3

d. increased by $1 (holding advertising constant), sales are expected to increase by $3

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