The chancellor at City University is worried that the grades have fallen in the past year. The grade point average for graduating students in the previous 5 years was 2.80 with a standard deviation of 0.25.The chancellor randomly samples 10 seniors from this year's graduating class and obtains the following GPAs: 2.40, 2.80, 2.65, 2.15, 2.65, 2.72, 2.42, 2.70, 2.52, 2.49. What can the chancellor conclude? Use a two-tailed test at the .05 significance level.