Question: 9. Let X be a random variable defined by P (X = 1) = P (X = 1) = 1/2. Let Y be a random

9. Let X be a random variable defined by P (X = −1) = P (X = 1) = 1/2. Let Y be a random variable defined by P (Y = −10) = P (Y = 10) = 1/2. Which one of X and Y is more concentrated about 0 and why?

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