Reconsider the previous exercise on height and haircut price.
a. Find the regression equation that predicts the haircut price based on height.
b. Interpret the slope and intercept of the regression line.

Data from previous exercise

In a survey of statistics students at Hope College, two of the questions asked were their height (in inches) and the cost of their last haircut, including any hair treatments (in dollars). The data can be found in the file HeightHaircut. Let’s explore whether or not there is evidence of a strong association between height and cost of haircuts.