Question
The random variable X and Y are independent, and their distributions are normal, with E(X) = 1000, E(Y ) = 900, StDev(X) = 300, and
The random variable X and Y are independent, and their distributions are normal, with E(X) = 1000, E(Y ) = 900, StDev(X) = 300, and StDev(Y ) = 400.
What can you say about the random variable (X-Y)?
Compute E[X-Y]
Compute the standard deviation of [X-Y]
Compute \( P(X \lt Y\))
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College Algebra
Authors: Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
12th edition
134697022, 9780134313795 , 978-0134697024
