Question: Determine whether each formula describes a discrete probability distribution. Explain. 1. Pr(x) = x/21; x = 0, 1, 2, 3, 4, 5, 6 2. Pr(x)

Determine whether each formula describes a discrete probability distribution. Explain.
1. Pr(x) = x/21; x = 0, 1, 2, 3, 4, 5, 6
2. Pr(x) = x/10; x = 1, 2, 3, 4
3. Pr(x) = 10-x/10; x = 1, 2, 3, 4, 5
4. Pr(x) = x + 1/15; x = 1, 2, 3, 4

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