Identify the Possible Reinforcement Schedules Described Below and Explain the Effects

Identify the possible reinforcement schedules described below and explain the effects of each on employees:
1.For every five times Justin cleans his dorm room,his roommate will pay for a video and snacks.
2.Herb likes to gamble.Slot machines are his favorite.
3.Rebecca likes her job at the coffee shop because she receives a paycheck every Friday.
Vance is a storm chaser who is always looking for the next F4 tornado.The reinforcement schedules are as follows:
1.This is fixed ratio.For every five times Justin cleans his dorm room,his roommate will buy the entertainment.
2.This is variable ratio.Slot machine returns.
3.This is fixed interval.Rebecca likes counting on her paycheck.
4.This is variable interval.torm chasers get reinforced on a variable interval schedule,assuming they want to periodically get the chance to chase after a tornado.