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3. You are told that E[x] = 4 and Var[x] = 18. What are the expected values and variances of the following expressions? =

3. You are told that E[x] = 4 and Var[x] = 18. What are the expected values and variances of the following expressions? = = 3x + 8 0.8x-10 x 2 3a. y 3b. y 3c. y

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