Need help with question 2 (not question 1)
Need help with question 2 (not question 1) 1. Suppose that (X,Y) is uniformly distributed over...
A point (X, Y ) in the Cartesian plane is uniformly distributed within the unit circle if X and Y have joint density Find the marginal densities fX and fY and state whether X and Y are independent or not. Provide a mathematical justification for your answer. 1, 22 + y2 <1, f(x, y) = { 1 0, otherwise.
Let X,Y be uniformly distributed in the rectangle defined by −3 < x−y < 3, 1 < x + y < 5. Find the marginal density fX(x) and E(Y|X).In the same situation find Cov(X,Y ). (3) Let X, Y be uniformly distributed in the rectangle defined by -3 < x-y<3, Find the marginal density fx(x) and E(Y|X). In the same situation find Cov(X, Y). 1<x+y<5.
4. Suppose X and Y has joint density f(x, y) = 2 for () < x <y<1. (a) Find P(Y - X > 2). (b) Find the marginal densities of X and Y. (c) Find E(X), E(Y), Var(X), Var(Y), Cov(X,Y)
5. Let X be uniformly distributed in [0, 1]. Given X = x, the r.v. Y is uniformly distributed in 0, x for 0<x<1 (a) Specify the joint pdf fxy(x,y) and sketch its region of support Ω XY. (b) Determine fxly(x1025). (c) Determine the probability P(X〈2Y). (d) Determine the probability P(X +Y 1)
4. Suppose X and Y have the joint pdf f(x,y) = 6x, 0 < x < y < 1, and zero otherwise. (a) Find fx(x). (b) Find fy(y). (c) Find Corr(X,Y). (d) Find fy x(y|x). (e) Find E(Y|X). (f) Find Var(Y). (g) Find Var(E(Y|X)). (h) Find E (Var(Y|X)]. (i) Find the pdf of Y - X.
Show the random variables X and Y are independent, or not independent Find the joint cdf given the joint pdf below Suppose that (X, Y) is uniformly distributed over the region defined by 0 sys1-x2 and -1sx 4 Therefore, the joint probability density function is, 0; Otherwise Suppose that (X, Y) is uniformly distributed over the region defined by 0 sys1-x2 and -1sx 4 Therefore, the joint probability density function is, 0; Otherwise
Suppose X andY have joint density f(x,y)=6*x*y^2 for 0<x<1, 0<y<1. (a) What is P(X+Y ≤1)? (b) Compute the marginal densities fX , fY of X, Y .
Let X, Y be jointly continuous with joint density function (pdf) fx,y(x, y) *(1+xy) 05 x <1,0 <2 0 otherwise (a) Find the marginal density functions (pdf) fx and fy. (b) Are X and Y independent? Why or why not?
(a) Show that fY X(y; x) is a valid density function. (b) Find the marginal density of Y as a functon of the CDF (c) Find the marginal density of X. (d) Deduce P[X < 0:2]. (e) Are Y and X independent? Problem 2: Suppose (Y, X) is continuously distributed with joint density function (a) Show that fyx(y, x) is a valid density function (b) Find the marginal density of Y as a functon of the CDF Φ(t)-let φ(z)dz. (c)...
question 4, 3 sub-questions Final2.jpeg iat probability density function is given by f(x, y (2(x2+ y'), 0<x <2, 0cy3 Find the marginal densities of X and Y. Lip 2 Are X and Y independent? 4p c. Find probability X + Y < i , P(X+Y < 1 ). The amount of time, in hours, that a computer functions before breaking down .b] uniformly distributed on [o is continuous random variable T