Let the random variable X have the pdf f(x) = e-ª for 0 < x < ∞, and 0 elsewhere. Compute the probability that the random interval (X, 3X) includes the point x = 3. What is the expected value of the length of the interval?

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Q: 0.25 0.26 0.27 0.49 0.62 0.63 0.63 0.64 0.71 0.84 D 0.88 0.92 0.93 0.94 0.96 0.96 0.97 1.03 1.06 1.0...

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