An analyst for Davidson Steel Company uses a Cobb-Douglas production function
Q = A Kα Lβ
for forecasting the company's output. By using quarterly data from 1996 to 2012, she estimates the model as
ln Qˆ t = 0.223 + 0.482 ln Kt + 0.518 ln Lt
(a) What is the estimate of A?
(b) Is this a constant return to scale production function?
(c) What would be the steel company's output if it employs 150 units of capital and 200 units of labor?