February 2005, reports on the results achieved by the Bank of America in improving customer satisfaction and customer loyalty by listening to the 'voice of the customer' A key measure of customer staifaction is the repsonse on a scale from 1 to 10 to the question: "Considering all the business you do with Bank of America, what is your overall satifaction with Bank of America?" Suppose that a random sample of 350 current results in 195 customers with a respons of 9 or 10 representing 'customer delight' Find a 95 percent confidence interval for the true proportion of all current Bank of America customers who would respond with a 9 or 10. Are we 95 percent confident that the proporation exceeds .48, the historical proportion of customer delight for Bank of America?