- #1
kasse
- 384
- 1
Assume that two random variables (X,Y) are uniformly distributed on a circle with radius a. Then the joint probability density function is
[tex]f(x,y) = \frac{1}{\pi a^2}, x^2 + y^2 <= a^2[/tex]
[tex]f(x,y) = 0, otherwise[/tex]
Find the expected value of X.
E(X) = [tex]\int^{\infty}_{- \infty}\int^{\infty}_{- \infty}\frac{x}{\pi a^2} dxdy[/tex]
Is this correct so far? What are the limits of the integral supposed to be?
[tex]f(x,y) = \frac{1}{\pi a^2}, x^2 + y^2 <= a^2[/tex]
[tex]f(x,y) = 0, otherwise[/tex]
Find the expected value of X.
E(X) = [tex]\int^{\infty}_{- \infty}\int^{\infty}_{- \infty}\frac{x}{\pi a^2} dxdy[/tex]
Is this correct so far? What are the limits of the integral supposed to be?