A hint to get started
Find a mean by symmetry and by summation
The discrete random variable has distribution
| 0 | 1 | 2 | |||
|---|---|---|---|---|---|
| 0.3 | 0.1 | 0.20 | 0.1 | 0.3 |
Find the mean of .
CJC · Lecture · Example 8
Name the events, identify the sample space, and state which outcomes or conditions are being counted.