Question: Select the true statement. a. As x approaches infinity, the probability distribution function. f(x) approaches 1. b. As x approaches infinity, the cumulative distribution function,

Select the true statement. a. As x approaches infinity, the probability distribution function. f(x) approaches 1. b. As x approaches infinity, the cumulative distribution function, F(x), approaches 0. d. The area underneath the probability distribution function, f(x), is equal to 1

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