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

z = 2, P(Z=z)=1/6

z = 3, P(Z=z)=1/6

z = 5, P(Z=z)=1/6

z = 7, P(Z=z)= x

z = 11, P(Z=z)= y

I'm supposed to find x and y given that E(Z)= 5+2/3

I have no idea how to do this. All I got is 7x+11x=4 but I can't solve this

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# Homework Help: Find the probability from the expected value?

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