The Mountain Bike data file on the text CD shows selling prices for mountains bikes. When y = mountain bike price ($) is regressed on x1 = weight of bike (lbs) and x2 = the type of suspension (0 = full, 1 = front end), = 2741.62 - 53.752x1 - 643.595x2.
a. Interpret the estimated effect of the weight of the bike.
b. Interpret the estimated effect of the type of suspension on the mountain bike.