Question
1) Let X and Y be independent random variables with X = 2, X = 2, Y = 2, and Y = 3. Find the
1) Let X and Y be independent random variables with μX = 2, σX = 2, μY = 2, and σY = 3. Find the mean and variance of 3X.
The mean of 3X is
The variance of 3X is
2)
Let X and Y be independent random variables with μX = 2, σX = 2, μY = 2, and σY = 3. Find the mean and variance of X + Y.
The mean of X + Y is
The variance of X + Y is
3)
Let X and Y be independent random variables with μX = 2, σX = 2, μY = 2, and σY = 3. Find the mean and variance of X – Y.
The mean of X - Y is
The variance of X - Y is
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Accounting Information Systems
Authors: Marshall B. Romney, Paul J. Steinbart
13th edition
133428532, 978-0133428537
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