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A Quadratic Trend Equation Was Estimated from Monthly Sales of Trucks

Question 101

Multiple Choice

A quadratic trend equation was estimated from monthly sales of trucks in the United States from July 2006 to July 2011. The estimated trend is yt = 106 + 1.03t + 0.048t2, where yt units are in thousands. From this trend, how many trucks would be sold in July 2012?


A) About 308,419
B) About 524,889
C) About 436,982
D) About 223,831

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