R.V. X and Y have the following joint density function:
f(x, y) = { Cx2y, x2 ≤ y ≤ 1,
0, o.w.
What is the constant C and E(Y |X = 1/2).
For C I got 14 but I'm not sure that is correct.
R.V. X and Y have the following joint density function: f(x, y) = { Cx2y, x2...
X1 and X2 are IID with the density:
a) joint density with r.v. Y1 = X1 and
Y2 = X1 + X2
(I think this might be transformation but I'm stuck
after)
b) marginal density for Y2
f(x) = V2nz exp (-2) , for x>0,
Let X be a r.v. with probability density function f(x)-e(4-x2), -2 < otherwise (a) What is the value of c? (b) What is the cumulative distribution function of X? (c) What is EX) and VarX
5. (10 pts )The random variables X and Y have joint density function 1 f(x,y) x2 + y2 <1. 3 7T Compute the joint density function of R= x2 + y2 and = tan-'(Y/X).
Let X and Y be joint continuous random variables with
joint density function
f(x, y) = (e−y
y
0 < x < y, 0 < y, ∞
0 otherwise
Compute E[X2
| Y = y].
5. Let X and Y be joint continuous random variables with joint density function e, y 0 otwise Compute E(X2 | Y = y]
2. Suppose that (X,Y) has the following joint probability density function: f(x,y) = C if -1 <r< 1 and -1 <y<1, and 0 otherwise. Here is a constant. (a) Determine the value of C. (b) Are X and Y independent? (Explain why or why not.) (c) Calculate the probability that 2X - Y > 0 (d) Calculate the probability that |X+Y| < 2 3. Suppose that X1 and X2 are independent and each is standard uniform on (0,1]. Let Y...
1. Consider two random variables X and Y with joint density function f(x, y)-(12xy(1-y) 0<x<1,0<p<1 otherwise 0 Find the probability density function for UXY2. (Choose a suitable dummy transformation V) 2. Suppose X and Y are two continuous random variables with joint density 0<x<I, 0 < y < 1 otherwise (a) Find the joint density of U X2 and V XY. Be sure to determine and sketch the support of (U.V). (b) Find the marginal density of U. (c) Find...
2. (10 pts The random variables X and Y have joint density function f(x, y) == 22 + y2 <1. Compute the joint density function of R= x2 + y2 and = tan-1(Y/X).
(1 point) If the joint density function of X and Y is f(x, y) = c(22 - y2)e- with OS: < oo and I y I, find each of the following. (a) The conditional probability density of X given Y = y >0. Conditional density fxy(:, y) = (Enter your answer as a function of I, with y as a parameter.) (b) The conditional probability distribution of Y given X = 2. Conditional distribution Fyx (2) = (Enter your answer...
Problem #8: Suppose that X and Y have the following joint probability density function. f(x,y)- ^x, 0 < x < 5, y> 0, x-2 <y <x+:2 146 (a) Find E(XY (b) Find the covariance between X and Y.
Problem #8: Suppose that X and Y have the following joint probability density function. f(x,y)- ^x, 0
1. Let X and Y have the joint density function given by zob to todos f(x, y) = {kxy) of 50<x< 2, 0 <y<3.) i 279VHb yodmu : 1093 otherwise a) Find the value of k that makes this a probability density function. TO B 250 b) Find the marginal distribution with respect to y. 0x11 sono c) Find E[Y] d) Find V[Y]. X10 sulay boso 50