Which of the Following Is a Required Condition for a Discrete

question 34

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) \(\geq\) 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