In: Statistics and Probability
Let X1, X2 ,X3 ∼U[0,1] be independent, and letX(1),X(2),X(3) be the order statistics, i.e., X(1) < X(2) < X(3)
(a) Find f(1)(x), f(2)(y) and f(3)(z).
(b) Verify that the joint density of X(1) and X(2) is
f(1,2)(x,y)=6(1−y), 0
(c) Find the conditional density of X(1) given X(2).
(d) Find E(X(1)+X(3 )/ X(2))