Quality control inspectors often randomly select items from an assembly line for inspection.For example,they may take the twelfth,seventeenth,forty-fourth,and sixtieth items.What reinforcement schedule are they using?
A)Variable-interval
B)Variable-fixed
C)Fixed-ratio
D)Fixed-interval
E)Variable-ratio

Question

Quizplus · Accepted Answer

The inspectors are using a variable-ratio schedule because they are selecting items at random intervals, not at fixed intervals or after a set number of items.

Quality Control Inspectors Often Randomly Select Items from an Assembly