2. According to the U.S. Census Bureau the average starting salary for college graduates is $44,678. You wonder whether RIT graduates are fairing any better than the national average. You contact recent graduates (class of 2014-2015) and asked them to report their starting salaries. You find, among a sample of 549 recent graduates, that the mean starting salary is $48,453 and a standard deviation of $1,899. Using the steps for hypothesis testing are there any differences?