Answer Happy

Macrohard have conducted a multiple linear regression analysis to predict the loading time (Y) in milliseconds (thousandths of seconds) for Macrohard Workstation les based on the size of the file (X;) in kilobytes and the speed of the processor used to view the nle (x) 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: 9 = 240.50 +0.35X1 -0.041x2) According to Macrohard's multiple regression equation, it is most reasonable to conclude that 290 kilobyte file is predicted to take 311.3 milliseconds to load on a 750 megahertz processor holding X2 constant, a one kilobyte increase in Xy will result in a decrease of 0.041 in the predicted value of y holding X¡ constant, a one megahertz Increase in x2 will result in an increase of 0.35 in the predicted value of y a 6,800 kilobyte file is predicted to take 2,374.5 milliseconds to load on a 6,000 megahertz processor