(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The distribution function of a random variable X is given by

F(x) = {

0 if x < -3

3/8 if -3 [tex]\leq[/tex] x < 0

1/2 if 0 [tex]\leq[/tex] x < 3

3/4 if 3 [tex]\leq[/tex] x < 4

1 if x [tex]\geq[/tex] 4

Calculate E(X), E(X[tex]^{2}[/tex] - 2|X|), E(X|X|).

2. Relevant equations

3. The attempt at a solution

I actually have no idea how to start this. None of the chapter examples seem to give me a clue on what to do. I have calcuated E(X) for probability mass function equations, but not distributive functions like the above. Can someone give me a strong hint on how to approach this for E(X) and I can take it from there? Thank you for any help.

And sorry for the formatting, I could not get it to look right in latex, but I think it should be understandable.

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# Homework Help: Prob and stat expected value of x

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