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
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)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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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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