Final Answer:
No, a probability greater than 100% is not valid. Probabilities range from 0% (impossible) to 100% (certain), and values outside this range are not meaningful in the context of probability.
Step-by-step explanation:
In probability theory, the probability of an event is a measure of the likelihood that the event will occur, expressed as a number between 0 and 100%.
A probability of 0% indicates an impossible event, while 100% indicates a certain event. The concept of probability is bound by these limits, forming a closed interval.
Therefore, a probability greater than 100% is illogical and violates the fundamental principles of probability theory.
When someone states a probability of 120%, it suggests a misunderstanding or misuse of the concept.
It could be a casual or exaggerated expression rather than a precise mathematical statement.
It's essential to recognize and correct such errors to maintain the integrity and accuracy of probability assessments. In realistic terms, a probability exceeding 100% implies absolute certainty, which contradicts the inherent uncertainty associated with most real-world events.
Thus, a probability of 120% is not a valid or meaningful representation within the framework of probability theory.