2.84 Alcohol and calories in beer revisited. Refer to the previous exercise. The data that you used includes an outlier.

1. (a) Remove the outlier and answer parts (a), (b), and (c) for the new set of data.

2. (d) Write a short paragraph about the possible effects of outliers on a least-squares regression line and the value of r², using this example to illustrate your ideas.