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Proggy99
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Homework Statement
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|).
Homework Equations
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.