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?

answer: y = -12x + 108

step-by-step explanation: do (y = m x+b) formula.

complete the steps to find the area of the trapezoid.

area of rectangle = 256   square units

area of triangle 1 = 24  square units

area of triangle 2 = 16  square units

area of triangle 3 =   96 square units

area of trapezoid = 120  square units

step-by-step explanation:

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.