Compute the expected lifetime of such a gadget.

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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4. The lifetime in hours of an electronic gadget is a random variable having a
probability density function of
f(x) = xe-2x
x 2 0.
Compute the expected lifetime of such a gadget.
Transcribed Image Text:4. The lifetime in hours of an electronic gadget is a random variable having a probability density function of f(x) = xe-2x x 2 0. Compute the expected lifetime of such a gadget.
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