A group of five workstations produces a product. Answer the following questions using the input, output, and capability per hour data in the chart below.
a. Calculate the number of units waiting at Workstations 2, 3, 4, and 5 after eight hours. Explain your answers.
b. Which machine is the bottle-neck? Explain your answer. 1 2 3 4 5 INPUT 60 60 40 40 38 CAPABILITY 60 40 60 38 60 OUTPUT 60 40 40 38 38