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[10] A random variable X has a moment generating function My(t) = (1 - 2t)-v/2. Let X1, X2, ..., Xn be n independent random observations

[10] A random variable X has a moment generating function My(t) = (1 - 2t)-v/2. Let X1, X2, ..., Xn be n independent random observations from X. Let Y be the sum of these independent random observations. Determine the mean and variance of Y

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