Question: Suppose D1, D2, D3,.., D10 are each independently distributed normal random variables with mean 10,000 and standard deviation 5,000. What is the standard deviation of

Suppose D1, D2, D3,.., D10 are each independently distributed normal random variables with mean 10,000 and standard deviation 5,000. What is the standard deviation of the random variable D1 D2 D3 ... D10

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