Engineering, 26.12.2019 05:31, yolo123321

Acontinuous random variable, x, whose probability density function is given by f(x) = ( λe−λx , if x ≥ 0 0, otherwise is said to be an exponential random variable with parameter λ denoted by x ∼ exp(λ) where λ > 0.

(a) find the c. d.f of x.
(b) suppose that the length of a phone call in minutes is an exponential random variable with parameter λ = 1 10 . if someone arrives immediately ahead of you at a public telephone booth, find the probability that you will have to wait between 10 and 20 minutes

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Acontinuous random variable, x, whose probability density function is given by f(x) = ( λe−λx , if x...