You are forecasting the weekly number of skiers for the Big Powder ski resort with a multiple regression analysis based

on four independent variables: Weekly Advertising $($in $$1,000$s$),$ Average Weekly Hotel Price $($in $$),$ Average Weekly

Lift$-$Ticket Price $($in $$),$ and Previous Week's Snow Fall $($in inches$).$ Summary information appears in the table below.

Assume the data have been screened and there are not any problems. Use a $=10\%$