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7. X is a random variable with a mean of 2 and a variance of 3, and Y is a random variable with a mean of 4 and a variance of 5, and the covariance between X and Y is -3. Define (a) Find the expected value of W. b) Find the variance of W
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Civen tba X is a random aod a vaiance o 3 That s va iable hath mean ola aod E)-4 and Va( and Let a. 4(2)6(4+3 = 8-24 t.3 Expe

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