If a random variable X has the following probability density function: ƒ(x) = e¯ª, x ≥ 0 What is E(X)? (a) 1 (b) -1 (c) In 2 (d) o (e) None of the above

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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If a random variable X has the following probability density function:
f(x) = e¯ª, x ≥ 0
What is E(X)?
(a) 1
(b) -1
(c) In 2
(d) 0
(e) None of the above
Transcribed Image Text:If a random variable X has the following probability density function: f(x) = e¯ª, x ≥ 0 What is E(X)? (a) 1 (b) -1 (c) In 2 (d) 0 (e) None of the above
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f(x)=e-x ; x≥0


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