A Test Is Conducted in 22 Cities to See If

question 95

Multiple Choice

A test is conducted in 22 cities to see if giving away free transit system maps will increase the number of bus riders.In a regression analysis,the dependent variable Y is the increase in bus riders (in thousands of persons) from the start of the test until its conclusion.The independent variables are X₁ = the number (in thousands) of free maps distributed and a binary variable X₂ = 1 if the city has free downtown parking,0 otherwise.The estimated regression equation is . In city 3,the observed Y value is 7.3 and X₁ = 140 and X₂ = 0.The residual for city 3 (in thousands) is:

• A) 6.15.
• B) 1.15.
• C) 4.83.
• D) 1.57.

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