Determine whether or not the table is a valid probability distribution of a discrete random variable. Explain fully (i). x 0 1 2 3 4 P(x) -0.25 0.50 0.35 0.10 0.30   Soln.  (ii). x 1 2 3 P(x) 0.325 0.406 0.164   Soln. (iii). x 25 26 27 28 29 P(x) 0.13 0.27 0.28 0.18 0.14

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