A manufacturer of computer workstations gathered average monthly sales figures f

A manufacturer of computer workstations gathered average monthly sales figures from its 56 branch offices and dealerships across the country and estimated the following demand for its product:Q = +15000 2.80P + 150A + 0.3Ppc + 0.35Pm + 0.2Pc= 15000- 2.80 (7000) + 150 (52) + .3 (4000) + .35 (15000) + .2 (8000)= 11250 (5234) (1.29) (175) (0.12) (0.17) (0.13) R2 = 0.68 SEE = 786 F = 21.25The variables and their assumed values areQ = QuantityP= Price of basic model = 7000 A = Advertising expenditures (in thousands) = 52 Ppc = Average price of a personal computer = 4000 Pm = Average price of a minicomputer = 15000 Pc = Average price of a leading competitors workstation = 8000