Answer :
Coffee shops that reward customers with one free cup of coffee after every ten coffee purchases are using a fixed-ratio reinforcement schedule.
Utilizing an established quantity of responses is part of the fixed ratio schedule. For instance, the rabbit would be reinforced on a FR 5 schedule if it received reinforcement each time it pulled the lever precisely five times. After an average number of responses have been received, reinforcement is applied according to ratio schedules.
A timetable of reinforcement is called a fixed ratio. According to this timetable, reinforcement is given following the conclusion of several responses. The amount of responses needed is constant. The timetable is designated as FR-#, where the number indicates how many responses must be given in order to receive reinforcement.
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