On a statistics exam at a very large school with a class of 300 students, the professor claims the average score on the test was a 76.2%. A group of student were discussing their exam scores and found out that they had an average scor of 72% with a standard deviation of 6 points. There were 9 students in the group. They start to question whether or not the teacher was exaggerating the class scores. Report the test statistic for this test