A study of college students show that 8 out of 12 students prefer a PC while 4 prefer Mac. Randomly select 2 students with no replacement between selections.
a) Draw a tree diagram and place probablities on each branch.
b) What is the probability that both would prefer a Mac?
c) What is the probability that at least one would prefer a Mac?
d) What is the probability that one would prefer a Mac and one a PC?
e) What is the probability that one would prefer a Mac after one that prefers a PC?