Consider the following events:
Event A = The survey respondent is less than 40 years old. Event B = The survey respondent is 40 years or older.
Events A and B are mutually exclusive and collectively exhaustive.

Question

Quizplus · Accepted Answer

Events A and B are mutually exclusive because a survey respondent cannot be both less than 40 years old and 40 years or older at the same time. They are collectively exhaustive because there are no other age possibilities for a respondent outside of being less than 40 years old or 40 years and older, covering all potential age scenarios.

Consider the Following Events