If Z represents the sum of two discrete random variables X and Y,
A)Z may be a discrete or a continuous random variable.
B)the probability distribution of Z is obtained by adding the distributions of X and Y.
C)Z may not satisfy the general requirements for a discrete probability distribution
D)Z will also be a discrete random variable.
E)Z will be a continuous random variable.

Question

Quizplus · Accepted Answer

When summing two discrete random variables, the result is also a discrete random variable, as the sum will consist of distinct outcomes that result from the combination of the outcomes of the original variables.

If Z Represents the Sum of Two Discrete Random Variables