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Calculate the expected value and standard deviation of 8 -

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The random variables X and Y have expected values 8 and 25, standard deviations 4 and 9, respectively.

(a) Calculate the expected value and standard deviation of 8 - 3X.

(b) Calculate the expected value and standard deviation of 7X-2Y+15 when X and Y are independent.

Reference no: EM13579507

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