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प्रश्न
Determine whether each of the following is a probability distribution. Give reasons for your answer.
| z | 3 | 2 | 1 | 0 | -1 |
| P(z) | 0.3 | 0.2 | 0.4. | 0.05 | 0.05 |
उत्तर
Here, pi > 0, `AA` i = 1, 2, ...5
Now consider
\[\sum\limits_{i=1}^{3} \text{P}_i\] = 0.3 + 0.2 + 0.4 + 0.05 + 0.05 = 1
∴ Given distribution is a probability distribution.
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