Let
X
be a random variable with the following probability distribution.
Value x ofX | P=Xx |
---|---|
0 | 0.15 |
10 | 0.10 |
20 | 0.50 |
30 | 0.20 |
40 | 0.05 |
Complete the following. (If necessary, consult a list of formulas.)
(a) Find the expectation EX of X.=EX(b) Find the variance VarX of X.=VarX |
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