The random variable X is defined by the density f(x) = 0.5u(x) e(0.5x). What is the variance of the random variable x is?

The random variable X is defined by the density f(x) = 0.5u(x) e(0.5x)

1.	The random variable X is defined by the density f(x) = 0.5u(x) e^(0.5x). What is the variance of the random variable x is?
A.	1/10
B.	3/80
C.	5/16
D.	3/16
Answer» C. 5/16

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The random variable X is defined by the density f(x) = 0.5u(x) e(0.5x). What is the variance of the random variable x is?

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The random variable X is defined by the density f(x) = 0.5u(x) e^(0.5x). What is the variance of the random variable x is?