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? (Assume that the items are unevenly spaced.)
A)Continuous
B)Fixed-ratio
C)Fixed-interval
D)Variable-ratio
E)Variable-interval

Question

Quizplus · Accepted Answer

The inspectors are using a variable-ratio schedule because they are selecting items at random intervals, which means the number of items between inspections varies.

Quality Control Inspectors Often Randomly Select Items from an Assembly