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 without replacement, and X and Y denote the number of pages with moderate and high graphics output in the sample. Determine
(a) fXY (x, y)
(b) fX (x)
(c) E(X)
(d) fY|3 (y)
(e) E(Y)|X = 3)
(f) V(Y|X = 3)
(g) Are X and Y independent?