Automated Assembly Systems, Defective Rate, Jam Rate
The component is defective and cause a station jam pi = mi qi
When the station jams, the component must then be cleared and the next component be allowed to feed and be assembled.
The component is defective but does not cause a station jam of probability (1 - mi)qi
The component is not defective (1 – qi)
The probabilities of the three possible events must sum to unify for any workstation.