8 ONE! points awarded "' cored Quality Progress, February 2005, reports on improvements in customer satisfaction and loyalty made by Bank of America. A key measure of customer satisfaction is the response [on a scale from 1 to 10] to the question: \"Considering all the business you do with Bank of America, what is your overall satisfaction with Bank of America?" Here, a response of 9 or 10- represents \"customer delight." Suppose that the survey selected 480 customers. Assume that 49% of Bank ofAmerica customers would currently express customer delight. That is, assume ,0 = .49. [a] Find the probability that the sample proportion obtained from the sample of 480 Bank of America customers would be within three percentage points of the population proportion. "hat is, find P{. 46