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Suppose 1 and 2 are independent random variables with means 1, 2 and standard deviations 1 and 2. a) Find the mean and variance for

Suppose 1 and 2 are independent random variables with means 1, 2 and standard deviations 1 and 2.

a) Find the mean and variance for a new random variable = 1 2

b) Find the mean and variance for a new random variable = 2 + 1

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