a regression analysis between sales (in $1000) and advertising (in $100) yielded the least squares line
A regression analysis between sales (in $1000) and advertising (in $100) yielded the least squares line= 75 + 6x. This implies that if $800 is spent on advertising, then the predicted amount of sales (in dollars) is
A、$12,300
B、$123,000
C、$4,875
D、$487,500