Problem 8.38Quality Progress. February 2005 reports on the results achieved byBa

Problem 8.38Quality Progress. February 2005 reports on the results achieved byBank of America in improving customer satisfaction and customerloyalty by listening to the voice of the customer. A key measureof customer satisfaction is the response on a scale from 1 to 10 tothe question: Considering all the business you do with Bank ofAmerica what is your overall satisfaction with Bank of America?Suppose that a random sample of 350 current customers results in195 customers with a response of 9 or 10 representing customerdelight. Find a 95 percent confidence interval for the trueproportion of all current Bank of America customers who wouldrespond with a 9 or 10. Are we 95 percent confident that thisproportion exceeds .48 the historical proportion of customerdelight for Bank of America?