A small-business Web site contains 100 pages and 60%, 30%, and 10% of the pages contain low, moderate, and high graphic content, respectively. A sample of four pages is selected randomly without replacement, and X and Y denote the number of pages in the sample with moderate and high graphics output. Determine:
(a) fxy (x, y)
(b) fx(x)
(c) E(X)
(d) fyß(y)
(e) E(Y|X = 3)
(f) V(Y|X =3)
(g) Are X and Y independent?