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Answer:
1.A Random Variable is a variable whose possible values are numerical outcomes of a random experiment.
2.The Mean (Expected Value) is: μ = Σxp.
3.The Variance is: Var(X) = Σx2p − μ2
4.The Standard Deviation is: σ = √Var(X)
Explanation:
I'm not sure of my answer, but I hope it helps.