Macrohard have conducted a multiple linear regression analys

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 (x_1) in kilobytes and the speed of the processor used to view the file (x_2) 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: According to Macrohard\'s multiple regression equation, it is most reasonable to conclude that: holding x_2 constant, a one kilobyte increase in x_1 will result in an increase of 0.17 in the predicted value of y a 60 kilobyte file is predicted to take 229.9 milliseconds to load on a 310 megahertz processor holding x_2 constant, a one kilobyte increase in x_1 will result in a decrease of 0.041 in the predicted value of y a 6,600 kilobyte file is predicted to take 1,128.9 milliseconds to load on a 5,500 megahertz processor

Solution

holding x2 constant, a one kilobyte increase in x1 will result in an increase of 0.17 in the predicted value of Y

because that is the mean of the value of coefficient for X1 when you hold x2 constant