Which of the Following Is a Required Condition for a Discrete

question 90

Multiple Choice

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

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

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