Final answer:
The population in this question refers to all clients at the fitness center. The sample is a subset of the population, and the parameter is the mean amount of time all clients exercise at the center each week. The statistic is the mean amount of time the sample of clients exercises at the center each week.
Step-by-step explanation:
The population in this question refers to all clients at the fitness center. The sample is a subset of the population, in this case, a specific group of clients. The parameter is the mean amount of time all clients exercise at the center each week. The statistic is the mean amount of time the sample of clients exercises at the center each week. The variable is the amount of time a client exercises at the center each week. The data would be the specific amounts of time recorded for each client in the sample.