. Let X be the random variable that represents the life in hours of a certain electronic device. The probability density function of X is f(x) = 20000, > 100. Find the expected life of this type of device.

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. Let X be the random variable that represents the life in hours of a certain electronic device. The
probability density function of X is f(x) = 20000, > 100. Find the expected life of this type of device.
Transcribed Image Text:number 4. Let X be the random variable that represents the life in hours of a certain electronic device. The probability density function of X is f(x) = 20000, > 100. Find the expected life of this type of device.
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