An independent researcher wants to investigate if the factors which determine the house rent ?(?Y, measured in? dollars), such as the distance of the house from the airport ?(X₁?), the time since the house was built ?(X₂), are significant or not. He collects data from 120 prospective locations and estimates the following regression? equation:

= 2.5 -0.88X, + 1.98X, (0.98) (2.14)