Homework Soursea Which of the three functions below is a possible probabili
a. Which of the three functions below is a possible probability mass function of X?
| x | |||||
| 0 | 1 | 2 | 3 | 4 | |
| p1(x) | 0.1 | 0.1 | 0.2 | 0.2 | 0.2 |
| p2(x) | 0.3 | 0.3 | 0.3 | 0.2 | 0.2 |
| p3(x) | 0.1 | 0.2 | 0.4 | 0.2 | 0.1 |
Solution
For probability mass function the condition is total prob =1
For p1 column total is = 0.8
p2 total = 1.30
p3 total 1.0
Hence p3 is a possible probability mass funcitn for x.
