A university professor wanted to know if the attitudes towards stats changed during the course of the semester. She took a simple random sample of students and gave them a test at the beginning of the term to assess their feelings toward stats. When the sememster was finished she administered another test to the same group of students and wanted to see if there was a difference b/w the average attitudes towards stats. What type of analysis would be most appropriate analysis? a. matched pairs t test
b. independent t tests
c. one sample t tests
d. none are appropriate