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1. Determine if the following are probability models (if no, state why). a. X 3 6 9 12 15 P(X) 4/9 2/9 1/9 1/9 1/9

1. Determine if the following are probability models (if no, state why). a. X 3 6 9 12 15 P(X) 4/9 2/9 1/9 1/9 1/9 b. X 1 2 3 4 5 P(X) 3/10 1/10 1/10 2/10 3/10 C. X 20 30 40 50 P(X) 0.8 0.2 0.9 0.3

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