Dr. Garcia gives the same final exam in her psychology class every semester. The mean exam score for every student who has ever taken her exam is a 77.6, with a standard deviation of 7.2. Dr. Garcia selects a random sample of 36 students and has them take a study skills course (e. g. note-taking, reading strategies, exam preparation, test-taking, etc.) before taking her class. The mean final exam score for students who took the study skills course was a 79.5. Required:
Conduct a hypothesis test to determine if there is sufficient evidence at the 10% level of significance that students who took the study skills course had higher exam scores.