Answer:
Confidence Interval
Step-by-step explanation:
Confidence interval is the interval estimate which might contain the true value of a population parameter which is unknown.
The confidence level of a parameter in a sample gives the closeness of the parameter in the population. The parameter which is calculated for a particular confidence level is called the confidence interval.
For example, the kilograms of rice that is calculated for a confidence level of 99% is 200-300 kg. So, a person would need to by 200-300 kg of rice in a year which is very close to the what the people actually buy in the entire population.