List the appropriate post hoc test (or tests if more than one is suitable) for each scenario described:

Weight gained by students dining atthreedifferent cafeterias over a six-month period

Weight loss by students attendingfourdifferent campus gym locations over a three-month period

Planned comparisons of pre-med students' average organic chemistry test scores acrossfourdifferent colleges, one of which is a state school, while the others are private schools

Sleep quality measured in minutes, by students usingtwodifferent types of pillows