Exhibit 18.5.Based on quarterly data collected over the last 4 years,the following regression equation was found to forecast the quarterly demand for the number of new copies of an economics textbook: 
, where Qtr1,Qtr2 and Qtr3 are dummy variables corresponding to Quarters 1,2 and 3.
Refer to Exhibit 18.5.Which of the following is not true?
A) The demand in Quarter 1 is on average 670 copies higher than in Quarter 2.
B) The demand in Quarter 3 is on average 305 copies higher than in Quarter 4.
C) The demand in Quarter 1 is on average 360 copies lower than in Quarter 3.
D) The demand in Quarter 2 is on average 1640 copies lower than in Quarter 3.
Correct Answer:
Verified
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