The number of customers who enter a store during one day is an example of _____.
A) a continuous random variable
B) a discrete random variable
C) either a continuous or a discrete random variable, depending on the number of the customers
D) either a continuous or a discrete random variable, depending on the gender of the customers

Question

Quizplus · Accepted Answer

The number of customers is a discrete random variable because it can only take on whole number values (e.g. 0, 1, 2, 3...). It cannot take on fractional or continuous values. The fact that it is one day doesn't affect whether it's continuous or discrete, only the nature of the quantity being measured. The gender of the customers is irrelevant to whether it's continuous or discrete.

The Number of Customers Who Enter a Store During One