Find and sketch the domains of the following function (a) f(x,y)=√x-2+√y-1 (b) f(x, y) = ln (1- x² − y²) - 1+y-x² (a) f(x)

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A: The objective of this question is to find the covariance of the two variables 0.72X and 0.62Y given…

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A: Var(X) = 42, and a =0.92Var(aX)=a2Var(x)

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Q: If Cov(X,Y) = 100, then what is Cov(8X,10Y)?

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A: E(X) = 62, E(Y) = 91, a = 0.38, and b = 0.62.E(aX+bY)=aE(x)+bE(y)

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Q: Suppose E(X) = 71, E(Y) = 62, a = 0.23, and b = 0.77. What is E(aX+bY)? (Please round to two decimal…

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Q: Suppose Cov(X,Y) = 821. What is Cov(6X, 4.7Y)?

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Q: Suppose Cov(X,Y) = 590. What is Cov(1.7X, 3.1Y)?

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A: Given below solution-Explanation: