Question: For the random variable X we have P(X = 0) = 14, while X has a density f (x) = 9 4 e3x, x >

For the random variable X we have P(X = 0) = 1∕4, while X has a density f (x) = 9 4

e−3x, x > 0.

The expected value of X is

(a) 1∕4 (b)3∕4 (c)9∕4

(d) 3

(e) 4

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