Please Help!Statistics
The owners of a convenience store are concerned about the quality of service their customers receive In order to study the level of satisfaction they selected a sample of customers to inquire about their experiences. One aspect of the study concerned the mean checkout time at the store.The owners hoped to find that the mean checkout time for all customers was less than 5 minutes,so 40 customers were randomly selected which resulted in a mean check out time of 3.5 minutes. Identify the following:
the population, the sample, the variable, the statistic, and the parameter

Question

Please Help!Statistics
The owners of a convenience store are concerned about the quality of service their customers receive In order to study the level of satisfaction they selected a sample of customers to inquire about their experiences. One aspect of the study concerned the mean checkout time at the store.The owners hoped to find that the mean checkout time for all customers was less than 5 minutes,so 40 customers were randomly selected which resulted in a mean check out time of 3.5 minutes. Identify the following:
the population, the sample, the variable, the statistic, and the parameter