Question
Letbe a random variable with the following probability distribution. Valueof x of X / P(X=x) -30 / 0.10 -20 / 0.35 -10 / 0.20 0
Letbe a random variable with the following probability distribution.
Valueof x of X / P(X=x)
-30 / 0.10
-20 / 0.35
-10 / 0.20
0 / 0.30
10 / 0.05
Complete the following. (If necessary, consult a list of formulas.)
(a) Find the expectationof E (X) of X.
E(X) = _______
(b) Find the variance Var (X) of X.
Var(X)=________
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Basic College Mathematics With Early Integers (Subscription)
Authors: Elayn Martin Gay
4th Edition
0135181267, 9780135181263
