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Is the following a valid discrete probability distribution? Why or Why not? x P(x) -100 0.1 -50 0.3 0 0.2 50 0.3 100 0.1

Is the following a valid discrete probability distribution? Why or Why not?

x P(x)

-100 0.1

-50 0.3

0 0.2

50 0.3

100 0.1

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