A health food store has launched a new pack of vitamins for children. The store records the number of packs ordered by a random sample of 100 online customers and the number of packs ordered by a random sample of 100 walk-in customers.

Which of the following inferences can be drawn about the buying pattern of the online customers versus that of the walk-in customers?

Online customers buy an average of five packs compared with walk-in customers, who buy an average of three packs.
Online customers buy an average of five packs compared with walk-in customers, who buy an average of two packs.
Online customers buy an average of six packs compared with walk-in customers, who buy an average of three packs.
Online customers buy an average of six packs compared with walk-in customers, who buy an average of two packs.