Suppose that the random variable X has the probability density function c(1– x2) for - 1s x <1 f(x) elsewhere What is the variance of X A) 1/3 B) 1/5 c) 1/2 1/4

A First Course in Probability (10th Edition)
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ISBN:9780134753119
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Chapter1: Combinatorial Analysis
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Suppose that the random variable X has the probability density function
c(1-
- x2)
for - 1< x <1
f(x) = {
elsewhere
What is the variance of X
A
1/3
1/5
c) 1/2
1/4
Transcribed Image Text:Suppose that the random variable X has the probability density function c(1- - x2) for - 1< x <1 f(x) = { elsewhere What is the variance of X A 1/3 1/5 c) 1/2 1/4
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