The random variable X has a variance of 2.4 Let Y = 5X + 7.6 What is the standard deviation of Y? Please show me how to work out
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Originally Posted by artikiller The random variable X has a variance of 2.4 Let Y = 5X + 7.6 What is the standard deviation of Y? Please show me how to work out Things you're expected to know: Var(aX + b) = a^2 Var(X) sd(aX + b) = |a| sd(X)
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