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
Correct Answer:

Verified
Correct Answer:
Verified
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