For the disk drives in Exercise 2 (as corrected in Exercise 12), we want to predict Price from Capacity.
a) Find the slope estimate, b1.
b) What does it mean, in this context?
c) Find the intercept, b0.
d) What does it mean, in this context? Is it meaningful?
e) Write down the equation that predicts Price from Capacity.
f) What would you predict for the price of a 3.0 TB disk?
g) You have found a 3.0 TB drive for $175. Is this a good buy? How much would you save compared to what you expected to pay?
h) Did the model overestimate or underestimate the pricing?