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03-01-2024
Mathematics

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X is a random variable with mean μX = 43.1 and standard deviation σX = 6.6, while Y is a random variable (independent of X ) with mean μY = 50.6 and standard deviation σY = 9.5.
Let Z = X+Y. That is, Z is the random variable representing the sum of X and Y. Find the mean and standard deviation of Z. Give your answers to two decimal places.

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