Is there a difference between the average sale price of "Excellent" vs. "Good" apartment buildings? To answer this question, first we need to generate a new variable that is the sale price divided by the number of apartments in the building (so that we can compare different sizes of apartment buildings). After doing this, conduct a hypothesis test for the average of this variable, allowing for at most a 1% Type I error, and be sure to clearly state your hypotheses, conclusions, and possible error in plain language