Three different milling machines were being considered for purchase by a clothes manufacturing company. The company would be purchasing hundreds of these machines. To make sure it made the best...

Three different milling machines were being considered for purchase by a clothes manufacturing company. The company would be purchasing hundreds of these machines. To make sure it made the best decision, the company borrowed five of each machines which were assigned to 15 technicians. Each machine was put through a series of tasks and was rated using a standardized test. The following data were obtained.