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A: Since you have asked multiple questions in single request.so we will answering only first question.

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A: The objective of the question is to find the covariance of the two variables 0.76X and 0.43Y given…

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Q: Suppose Cov(X,Y) = 725. What is Cov(0.72X, 0.62Y)?

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: Fundamental inverse Trigonometric Identities: →cosh2y - sinh2y = 1 Basic derivative:…

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A: Consider the given graph of the function.

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A: Definition:

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A: Substitute:-         x2 by u then integrate

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A: Question 9,Given,          y=4sin32x

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A: The solution is given as

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A: find d2ydxdz y=(z14-3lnax2)-2

Q: Suppose Cov(X,Y) = 546. What is Cov(0.13X, 0.41Y)?

A: The objective of the question is to find the covariance of 0.13X and 0.41Y given that the covariance…

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A: Given that a integration and we solve this integration by general property of integration.   We know…

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Q: Suppose Cov(X,Y) = 65. What is Cov(0.46X, 0.39Y)?

A: The objective of this question is to find the covariance of the two variables 0.46X and 0.39Y given…

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

A: The objective of this question is to find the covariance of the two variables 6X and 4.7Y given the…

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A: