A stare driver's license exam center would like to examine its poeration its operation for potential improvement Arriving customer enter the building and take a number to determine their place in line for the written exam is self administerd by one of five electronic testers . the testing times are distributed as EXPO(8) :
all times are in minutes Thirteen of the customers fail the test with lots of questions ) These customers are given a booklet on the state driving rules for further study and leave the system (on foot) . The customers fail the test (it's a hard test