Concept explainers
Management proposed the following regression model to predict sales at a fast-food outlet.
y = β0 + β1x1 + β2x2 + β3x3 + ε
where
x1 = number of competitors within one mile
x2 = population within one mile (1000s)
y = sales ($1000s)
The following estimated regression equation was developed after 20 outlets were surveyed.
ŷ = 10.1 − 4.2x1 + 6.8x2 + 15.3x3
- a. What is the expected amount of sales attributable to the drive-up window?
- b. Predict sales for a store with two competitors, a population of 8000 within one mile, and no drive-up window.
- c. Predict sales for a store with one competitor, a population of 3000 within one mile, and a drive-up window.
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Chapter 15 Solutions
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