8.7 Comparing teaching assistants (TAs). Professor Holmes has two teaching assistants who grade homework for a Statistics 101 course. Professor Holmes gives each of the two teaching assistants a rubric (a clear scoring guide) for the TAs to use when they grade the assignments. Holmes gives each TA the same student’s paper to grade and has each TA grade the paper according to the rubric. Professor Holmes is doing this to try to guarantee the scores given by the TAs are