The questions are based on the QSR Drive-Thru article:
Question 1. Why does a wider variety on the menu increase service times? How does this impact the waiting times and specifically what variable in the queuing analysis changes?
Question 2. When Krystal reduced its average service time by 40 seconds, how does this decrease the average number of customers waiting in line?
Question 3. How does customer-introduced variability affect the drive-thru process? Identify and briefly describe three ways. Then identify 2 possible ways to deal with each type of variability and classify each using the customer-introduced variability matrix. You may use the table in the case study to help answer the question.