SOLUTION: . Find E(x), E(X2) and 2 for the probability function P(x) defined by the following table. (k is constant) xi 1 2 3 ----- N P(xi) k 2k 3k ----- N

Question 718098: . Find E(x), E(X2) and 2 for the probability function P(x) defined by the following table. (k is constant)
xi 1 2 3 ----- N
P(xi) k 2k 3k ----- N

Answer by oscargut(2103) (Show Source): You can put this solution on YOUR website!
Hi,
Can you check the table ?
xi is from 1 to N (that is right)
But P(xi) is : k,2k,3k......N , can you check that N ??

Is N or Nk ??

You can ask me more using this e-mail (mthman@gmail.com) or you can visit my site:
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SOLUTION: . Find E(x), E(X2) and &#61555;2 for the probability function P(x) defined by the following table. (k is constant) xi 1 2 3 ----- N P(xi) k 2k 3k ----- N

SOLUTION: . Find E(x), E(X2) and 2 for the probability function P(x) defined by the following table. (k is constant) xi 1 2 3 ----- N P(xi) k 2k 3k ----- N