Concerns that were raised for the environment near a government facility led to a study of plants. Since leaf area is difficult to measure, the leaf area ( cm2) was fit to
x = Leaf length × Leaf width
using a least squares approach. For data collected one year, the fitted regression line is
 = .2 + 0.5 x
and s2 = (0.3)2. Comment on the size of the slope. Should it be positive or negative, less than one, equal to one, or greater than one?