Question
Let X be a random variable with the following probability distribution : Value x of X P (X=x) -30 0.05 -20 0.55 -10 0.25 0
Let X be a random variable with the following probability distribution:
Value x of X P (X=x)
-30 0.05
-20 0.55
-10 0.25
00.10
100.05
Find the expectation E(X) and variance Var (X) of X.
- E (x) =____________
- Var (X) = ____________
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Probability and Random Processes With Applications to Signal Processing and Communications
Authors: Scott Miller, Donald Childers
2nd edition
123869811, 978-0121726515, 121726517, 978-0130200716, 978-0123869814
