Which of the following can reduce waiting time for customers?
(i) Reduce the variability in the time it takes to serve a customer
(ii) Have customers create appointments or reservations
(iii) Pool employee resources such that there is a single line and whatever employee is available can help the next person in line
Only (i)
Only (ii)
Only (iii)
(i) and (ii)
(i) and (iii)
(ii) and (iii)
Any of them will help (that is (i), (ii) or (iii))