The sum of the probabilities of all the events in the sample space of a probability
distribution must equal 1.

Name: The sum of the probabilities of all the events in the sample space of a probability distribution must equal 1.
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Question

Quizplus · Accepted Answer

In a probability distribution, the sum of the probabilities of all possible outcomes (events) in the sample space must equal 1, as this represents the certainty that one of the outcomes will occur.

The Sum of the Probabilities of All the Events in the Sample