Question

If the meann service time is 15 minutes per customer, what is the meann service rate (number of customers served per hour)? A. 2 customers per hour

B. 4 customers per hour
C. 6 customers per hour
D. 8 customers per hour

Answer 1

Answer: The mean service rate can be calculated by converting the mean service time from minutes per customer to customers per hour. Therefore, the mean service rate would be four customers per hour (option B).

Explanation: To convert the mean service time from minutes per customer to customers per hour, we need to invert the time and multiply it by 60 to convert it from minutes to hours. In this case, the mean service time is 15 minutes per customer, which can be converted to 1/15 hours per customer. Inverting this gives us a rate of 15/1 hours per customer. Multiplying this rate by one customer per hour, we get 15 customers per hour. Thus, the mean service rate is four customers per hour (option B).