You work in the corporate office for a nationwide convenience store franchise that operates nearly 10,000 stores. The per- store daily customer count (i.e., the mean number of customers in a store in one day) has been steady, at 900, for some time. This increase seems like a substantial amount to you, but it also seems like a pretty small sample. Is there statistical evidence that reducing coffee prices is a good strategy for increasing the mean customer count? Be prepared to explain your conclusion.