SOLUTION: A random variable X has given the possible values of 1,2,3. Given the E(x)=2 and E(x^2)=5. Find the probability that (x=1) (x=2) (x=3). PLEASE HELP!

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: A random variable X has given the possible values of 1,2,3. Given the E(x)=2 and E(x^2)=5. Find the probability that (x=1) (x=2) (x=3). PLEASE HELP!      Log On


   

Question 1029877: A random variable X has given the possible values of 1,2,3. Given the E(x)=2 and E(x^2)=5. Find the probability that (x=1) (x=2) (x=3).
PLEASE HELP!
Answer by Fombitz(32388) About Me  (Show Source):