A STAT instructоr аt University оf Kentucky wаnts tо use two exаms in her classes next year. This year, she gives both exams to 8 students in a small class. She wants to know if the exams are equally difficult and wants to check this by looking at the differences between scores. If the mean difference between scores for students is “close enough” to zero, she will make a practical conclusion that the exams are equally difficult. Conduct a hypothesis test on mean difference of two exams. We need details for this hypothesis test and the type of hypothesis test.