Which of the Following Is a Required Condition for a Discrete

question 81

Multiple Choice

Which of the following is a required condition for a discrete probability function?

• A) ∑f(x) = 0 for all values of x
• B) f(x) 1 for all values of x
• C) f(x) < 0 for all values of x
• D) ∑f(x) = 1 for all values of x

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