Chapin Manufacturing Company operates 24 hours a day, five days a week. The workers rotate shifts each week. Management is interested in whether there is a difference in the number of units produced when the employees work on various shifts. A sample of five workers is selected and their output recorded on each shift. At the 0.05 significance level, can we conclude there is a difference in the mean production rate by shift or by employee? Units Produced Employee Day Afternoon Night Skaff 36 22 35 Lum 38 26 34 Clark 25 26 38 Treece 37 29 25 Morgan 25 25 33