A random variable has the following probability mass function.
| 3 | 6 | 8 | 12 | |
|---|---|---|---|---|
| 1/2 | 1/4 | 1/8 | 1/8 |
The expected value of the variable is ______ (round off to 1 decimal place).
Min: 5.4 Max: 5.6
Answer: 5.5
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