Final answer:
If 10 customers arrive per hour and there is no variability in their arrival, each customer arrives exactly 6 minutes after the previous one.
Step-by-step explanation:
The question asks about the fixed time interval between customer arrivals when there is no variability in the process – meaning each customer arrives at a consistent time after the previous one. If 10 customers are arriving per hour, we can calculate the interval by dividing the total number of minutes in an hour by the number of customers. Since there are 60 minutes in an hour, and 10 customers arrive each hour, the time between each arrival is:
60 minutes ÷ 10 customers = 6 minutes
Therefore, when there is no variability in the arrival process, each customer arrives exactly 6 minutes after the previous customer.