Question: 11. A process randomly generates digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 with equal probabilities. If T is a random variable

11. A process randomly generates digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 with equal probabilities.

If T is a random variable representing the sum of n digits taken from the process, find the mean and the variance of T.

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