Question

which of the following mathematical operations is used to express when the probability of an event is equal to the probabilities of the individual outcomes in a random experiment?
a. product
b. difference
c. sum
d. average

Explanation:

In probability theory, the probability of an event composed of mutually - exclusive individual outcomes in a random experiment is found by summing the probabilities of those individual outcomes. For example, if event A is made up of outcomes $o_1$, $o_2$, etc., and they are mutually exclusive, $P(A)=P(o_1)+P(o_2)+\cdots$.

Answer:

C. Sum