Daniel​ glaser, chairman of the college of san​ antonio's business​ department, needs to assign professors to courses next semester. as a criterion for judging who should teach each​ course, professor glaser reviews the past 2​ years' teaching evaluations​ (which were filled out by​ students). since each of the four professors taught each of the four courses at one time or another during the​ 2-year period, glaser is able to record a course rating for each instructor