Quality Progress, February 2005, reports on the results achieved by Bank of America in improving cus
Question: Quality Progress, February 2005, reports on the results achieved by Bank of America in improving customer satisfaction and customer loyalty by listening to the "voice of the customer." A key measure of customer satisfaction is the response on a scale of 1 to 10 to the question: "Considering all of the business you do with Bank of America, what is your overall satisfaction with Bank of America?" Suppose that a random sample of 350 current customers results 195 customers with a response 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 this proportion exceeds .48, the historical proportion of customer delight for Bank of America?
Deliverables: Word Document
![](/images/msword.png)