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Question
Determine whether each of the following is a probability distribution. Give reasons for your answer.
| x | 0 | 1 | 2 | 3 | 4 |
| P(x) | 0.1 | 0.5 | 0.2 | –0.1 | 0.3 |
Solution
Here, P(X = 3) = –0.1 < 0
Probability for an value of x cannot be negative.
∴ Given distribution is not a probability distribution.
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