Confidence Interval

Confidence interval is the interval bounded by confidence limits.
A confidence interval is an interval in which a measurement or trial falls that corresponds to a given probability.
A confidence interval is an interval in which a measurement or trial falls that corresponds to a given probability.

…the end points of such an interval are called upper and lower confidence limits.

Sources:

Meaning of natural language in English [Електронний ресурс]: / Режим доступу: https://dictionary.cambridge.org/dictionary/english/natural-language

English dictionary: WolframAlpha. Computational intelligence https://www.wolframalpha.com/

The world standard in knowledge since 1768 https://www.britannica.com/