Companies that sell groceries over the Internet are called e-grocers. Customers enter their orders, pay by credit card and receive delivery by truck. To determine whether an e-grocery would be profitable in one large city, a potential e-grocer offered the service and recorded the size of the order for a random sample of customers. The data are stored in the data file.

(i) Estimate with 99% confidence the average order in the city.

(ii) Financial analysis indicates that to be profitable the average order would have to exceed $50.