Based on annual data the following first order autoregressive model for the US GDPz is estimated GDPt = 1.0417GDPt -1 + 113.6557
(a) Write the general solution for the GDP.
(b) If the initial value of the GDP for year 1978 is $2,294.7 billion, find the estimate of the GDP for year 2000 and 2005.
(c) If the actual values for GDP of 2000 and 2005 are $9,817 and $12,433.9 billion, find the estimation error of the model based on MAPE.