1. Based on the sample of customer data for 1999, what can Green conclude about average customer profitability for Pilgrim Bank's entire customer population? 2. Is the difference in average profitability between online and offline customers in the sample indicative of a meaningful difference in profitability across these groups for Pilgrim Bank's entire customer population? 3. How do retail banks make money from their customers? How much variation is there in profit across customers? Based on this, what do you recommend the bank regarding the online channel pricing strategy?