Problem #9: Suppose that a random variable X has the following probability density function. (c(81-x²) 0≤x≤ 9 0 otherwise f(x) = Find the expected value of X. (You will need to find the value of the constant C so that f is a pdf.)

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem #9: Suppose that a random variable X has the following probability density function.
C(81-x²) 0≤x≤ 9
otherwise
Problem #9:
f(x) =
o
Find the expected value of X.
A
(You will need to find the value of the constant C so that f is a pdf.)
Enter your answer symbolically,
as in these examples
Transcribed Image Text:Problem #9: Suppose that a random variable X has the following probability density function. C(81-x²) 0≤x≤ 9 otherwise Problem #9: f(x) = o Find the expected value of X. A (You will need to find the value of the constant C so that f is a pdf.) Enter your answer symbolically, as in these examples
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