The sum of the probabilities of all possible outcomes of a trial must be 1.What rule or law is this?
A)The Law of Large Numbers
B)The Probability Assignment Rule
C)The Total Probability Rule
D)The Rule of Law
E)The Law of Averages

Question

Quizplus · Accepted Answer

This is known as the Total Probability Rule, which states that the sum of the probabilities of all possible outcomes of a trial must be 1. This is a fundamental principle of probability theory.

The Sum of the Probabilities of All Possible Outcomes of a Trial