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Which of the Following Mathematical Expressions Represents the Sum Rule

Question 37

Multiple Choice

Which of the following mathematical expressions represents the sum rule, which can be used to determine the probability of either event X or event Y occurring if they CANNOT occur simultaneously? (In the equations below, Px means probability of event X; Py means probability of event Y.)


A) = (Px) 2 + (Py) 2
B) = Px + Py
C) = PxPy
D) = (Px + Py) 2

Correct Answer:

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