How were the correct answers of 1/45 and -2/73 attained? Suppose the joint PMF of the random variables X and Y isP(X = x, Y = y) = a(x+y)01. Find the value of a.2. Find the value of the covariance Corr(X, Y).(a, Corr(X, Y)) = 1/45,-2/73if(x, y) = {1,2,3} × {2,3,4},Otherwise.

the joint PMF of X and Y:- P(X=x, Y=y) = a(x+y); (x,y): {1,2,3}x{2,3,4}

Suppose the joint PMF of the random variables X and Y is P(X= x, Y = y) = a(x+y) if(x, y) = {1,2,3} × {2,3,4} 0 Otherwise. 1. Find the value of a. 2. Find the value of the covariance Corr(X, Y). (a, Corr(X, Y)) = 1/45,-2/73

Suppose the joint PMF of the random variables X and Y is P(X= x, Y = y) = a(x+y) if(x, y) = {1,2,3} × {2,3,4} 0 Otherwise. 1. Find the value of a. 2. Find the value of the covariance Corr(X, Y). (a, Corr(X, Y)) = 1/45,-2/73

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

Section13.2: Expected Value And Variance Of Continuous Random Variables

Problem 10E

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How were the correct answers of 1/45 and -2/73 attained?

Suppose the joint PMF of the random variables X and Y is
P(X = x, Y = y) = a(x+y)
0
1. Find the value of a.
2. Find the value of the covariance Corr(X, Y).
(a, Corr(X, Y)) = 1/45,-2/73
if(x, y) = {1,2,3} × {2,3,4},
Otherwise.

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