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.
Correct Answer:
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