# Question

For each of the following, determine whether the given values can serve as the values of a distribution function of a random variable with the range x = 1, 2, 3, and 4:

(a) F(1) = 0.3, F(2) = 0.5, F(3) = 0.8, and F(4) = 1.2;

(b) F(1) = 0.5, F(2) = 0.4, F(3) = 0.7, and F(4) = 1.0;

(c) F(1) = 0.25, F(2) = 0.61, F(3) = 0.83, and F(4) = 1.0.

(a) F(1) = 0.3, F(2) = 0.5, F(3) = 0.8, and F(4) = 1.2;

(b) F(1) = 0.5, F(2) = 0.4, F(3) = 0.7, and F(4) = 1.0;

(c) F(1) = 0.25, F(2) = 0.61, F(3) = 0.83, and F(4) = 1.0.

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