Suppose that X1 and X2 have joint PDF xx2(,2)o 0 : otherwise (a) Use the transformation...
4. Suppose that X and X2 have joint PDF: jXiXy(Xi,T2)=Í : otherwise 0 (a) Use the transformation technique to find the joint PDF of Y1 and Y2 where Yi = (b) Using your answer to part (a), find and identify the distribution of Yi
4. Suppose that X and X2 have joint PDF 0 otherwise (a) Use the transformation technique to find the joint PDF of y, and where x,/x, and Y, = X2 (b) Using your answer to part (a), find and identify the distribution of Y.
thanks Suppose that Xi and X2 are independent random variables each having PDF: : otherwise (a) Use the transformation technique to find the joint PDF of Yi and Ya where Y-X1 and ½ = Xi +X2. (b) Using your answer to part (a), and the fact that o Vu(1-u) find and identify the distribution of Y2.
5. Suppose that X and X2 are independent random variables each having PDF: each having PDF: : otherwise (a) Use the transformation technique to find the joint PDF of Yi and Yo where Y -X and ½ = Xi +Xg. (b) Using your answer to part (a), and the fact that find and identify the distribution of Y
Q3. Suppose that X, Y have joint pdf a for x2 + y2 0 otherwise. 1. fxy(x, y)- (a) Find the value of a so that fxy(x, y) is a valid pdf. b) Find the marginal pdf for X Hint: It is helpful to sketch the region of the ry-plane where the pdf is non-zero
Please do by hand. Thanks in advance. 5. Let X1 and X2 have joint pdf f(x1, x2) = 4xı, for 0 < x < x2 < l; and 0 otherwise. Find the pdf of Y = X/X2. (Hint: First find the joint pdf of Y and Y2 = X1.)
Suppose that (X1, X2) N (0,0,1,1,0). It follows from this that the joint PDF of (X1, X2) is given by Ixvx:(21,2) = exp (1} (27 +23)) Furthermore, if 1 Y Tā (X1 + X2) and Y2 (X1 - X2) Then (Y1,Y) ~ N(0,0,1,1,0) as well. (a) If X1 <X2, what are the possible values of Y¡ and Y2? (b) If Y, <0, what are the possible values of Xi and X,? (c) What is the marginal distribution of Yg? (d)...
6. Suppose that (X1, X2) ~ N(0,0,1,1,0). It follows from this that the joint PDF of (X1, X2) is given by 1 fx1,x2 (x1, x2) - cxp («** + x2)) Furthermore, if 1 and (X1 + X2) ✓2 1 Y2 (X1 - X2) V2 Then (Yı, Y2) ~ N(0,0,1,1,0) as well. (a) If X1 < X2, what are the possible values of Y¡ and Y2? (b) If Y2 < 0, what are the possible values of X1 and X2? (c)...
1. Let X1 and X2 have the joint pdf f(x1, x2) = 2e-11-22, 0 < 11 < 1 2 < 0o, zero elsewhere. Find the joint pdf of Yı = 2X1 and Y2 = X2 – Xı.
Consider two random variables X and X2 with the joint pdf Nn.za) ={Orm ekewhere 1, o?r2 < 1 Let Y X,X2 and Y2X2 be a joint transformation of (Xi, X2) (a) Find the support of (Y.%) and sketch it. (b) Find the inverse transformation. (c) Compute the Jacobian of the inverse transformation (d) Compute the joint pdf of (Yi, Y2) (e) Derive the marginal pdf of Y? from the joint pdf of (y,,Y2).