Drake Marketing and Promotions has randomly surveyed 200 men who watch professional sports. The men were separated according to their educational level (college degree or not) and whether they preferred the NBA or the National Football League

(NFL). The results of the survey are shown:

Sports Preference College Degree No College Degree NBA 40 55 NFL 10 95

a. What is the probability that a randomly selected survey participant prefers the NFL?

b. What is the probability that a randomly selected survey participant has a college degree and prefers the NBA?

c. Suppose a survey participant is randomly selected and you are told that he has a college degree. What is the probability that this man prefers the NFL?

d. Is a survey participant’s preference for the NBA independent of having a college degree?