The Probability of an Impossible Event Is One: True or False?

False, the probability of an impossible event is zero, not one.

In probability theory, an impossible event has a probability of zero, not one. Probability values range from 0 to 1, with 0 denoting impossibility and 1 indicating certainty. An impossible event cannot occur under the given conditions, and assigning it a probability of one would imply certainty, which is incorrect. The probability of an event reflects the likelihood of its occurrence, and the probability of one is reserved for certain events. Conversely, a probability of zero signifies an event’s impossibility. This distinction is crucial for understanding the fundamental principles of probability and ensuring accurate interpretations in various fields such as mathematics, statistics, and decision-making.