SOLUTION: You have a random variable X with variance 3. Now you multiply X with 2. What becomes the variance of X?

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Question 1024217: You have a random variable X with variance 3. Now you multiply X with 2. What becomes the variance of X?


Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
If Var(X) = 3, then Var(2x) = 2%5E2%2A3 = 12.