The sum of the probabilities of all possible outcomes in a sample space is:
A) always 0.
B) always between 0 and 1.
C) always 1.
D) always more than1.

Question

Quizplus · Accepted Answer

The sum of the probabilities of all possible outcomes in a sample space is always equal to 1 because one of the possible outcomes must occur. Therefore, the sum of the probabilities of all possible outcomes must add up to a total likelihood of 100%.

The Sum of the Probabilities of All Possible Outcomes in a Sample