Question: A time-series demand estimated function with quarterly dummy variables for adjustment is shown in the following: Q t = 1,318 + 11.3t + 40.7 D

A time-series demand estimated function with quarterly dummy variables for adjustment is shown in the following:

Q_t= 1,318 + 11.3t + 40.7 D_1t 3.2 D_2t + 35.9 D_3t ,

in which Q is at unit of thousand and t is the year starting 2006 t =1, 2007 t =2, and D_1t, D_2t, D_3t denote the dummy variables of the first, second, and third quarter in the year t.

a. In Year 2021, the period t should be equal to _______ (2 points).

b. What is the forecasting quantity demanded for the third quarter in 2021? _____ (4 points)

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