What is the expected value?
|
Outcome |
Value of Random Variable |
Probability |
|
A |
1 |
.4 |
|
B |
2 |
.3 |
|
C |
3 |
.2 |
|
D |
4 |
.1 |
A.) 2.5
B.) 10
C.) 3
D.) 0.75
From given table,
Mean =
X * P(X)
= 1 * 0.4 + 2 * 0.3 + 3 * 0.2 + 4 * 0.1
= 0.4 + 0.6 + 0.6 + 0.4
= 2
Expected value = 2
Not in the option value of 2
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