Question 3

The Snappy Digital Camera Company segments its products into two product lines: the professional series and the amateur series. With the purchase of a Snappy digital camera, a customer is entitled to join the Snappy Club as a Professional member or an Amateur member, depending on which series he/she has purchased. There are in total 600 Snappy Club members. Among the 400 Professional members, 220 are male. Among the 200 Amateur members, 125 are female.

a.) Fill in the following contingency table with relevant joint probabilities (four of them) and marginal probabilities (four of them).

	M (Male)	F (Female)	Total
P (Professional)
A (Amateur)
Total			1

b,) A member is randomly selected from Snappy's members list. What is the probability that the member selected is not female?

c.) A member is randomly selected from Snappy's members list. Knowing that an Amateur member is selected, what is the probability that the member selected is female?

d.) A member is randomly selected from Snappy's members list. Knowing that the member selected is male, what is the probability that he is a Professional member?