i need the answer quickly 2 6:31D165% ill aOمكالمات الطوارئ فقط تدQuestionLet X and Y be two contimuous random variables with joint probability density functiongiven by:f(x. y) = {.(8xy, OSxsyS1elsewhereLet cov(X,Y) = var(X) = and h(y) = }0,(4y, 0sysielsewhereThen the value of var(X + 2Y) is equal to:68/75None of the other options82/75O 424/225QuestionThe joint probability distribution function of a discrete random variable isf(x, y) = cx? y for x=1, 2, 3 and y=1, 4, 16. c # 0Then P(1

First we have to calculate the Var(Y) as Var(Y) = E(Y2) - [E(Y)]2 Note : Since you have asked…

Answered: Let X and Y be two continmous random…

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter13: Probability And Calculus

Section13.3: Special Probability Density Functions

Problem 30E

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Let X and Y be two continmous random varíables with joint probability density function given by: f(x,y) = {Bxy, 0 SISYSI elsewhere Let cov(X,Y) = var(X) = and h(y) = {" (4y, 0sys1 elsewhere Then the value of var(X+ 2Y) is equal to: