Chapin Manufacturing Company operates 24 hours a day, 5 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? Employee Skaff Lum Clark Treece Morgan Day 33 38 33 37 27 Units Produced Afternoon Night 22 33 26 37 25 29 23 24 24 39