A random sample of 24 companies from the Forbes 500 list was
selected, and the relationship between their annual sales (, in
hundreds of thousands of dollars) and annual profits (, in hundreds
of thousands of dollars) was investigated by the researchers.
[Note: if x = 200, that means the company had annual sales of $20
million; similarly for y values]. The following simple linear
regression model was used: = + + .
Answer the following questions:
(a) In order...