Case 1. In the Statistics exam for the year 2019 at a University.

100 students got the following scores:
- 25 people got an A
- 30 people got a B grade
- 17 people got a C
- 20 people got a D
- 8 people got an E

If in previous years, students who scored A was 30%, B was 20%, C was 35%, D was 7% and E was 8%, does this year's student scores have the same distribution as the previous year students' grades using the 5% significance level?