Macrohard have conducted a multiple linear regression analysis to predict the loading time (y) in milliseconds (thousandths of seconds) for macrohard workstation files based on the size of the file (x1) in kilobytes and the speed of the processor used to view the file (x2) in megahertz. the analysis was based on a random sample of 400 macrohard workstation users. the file sizes in the sample ranged from 110 to 5,000 kilobytes and the speed of the processors in the sample ranged from 500 megahertz to 4,000 megahertz. the multiple linear regression equation corresponding to macrohard's analysis is: y^i = 246.10 + 0.36x1i - 0.043x2iaccording to macrohard's multiple regression equation, it is most reasonable to conclude that: a. holding x1 constant, a one megahertz increase in x2 will result in an increase of 0.36 in the predicted value of yb. a 5,600 kilobyte file is predicted to take 2,004.1 milliseconds to load on a 6,000 megahertz processorc. a 75 kilobyte file is predicted to take 257.2 milliseconds to load on a 370 megahertz processord. holding x1 constant, a one megahertz increase in x2 will result in a decrease of 0.043 in the predicted value of y