A herbal cosmetics manufacturer's regional distribution center has four workstations that are responsible for packing cartons for shipment to small retailers. Two workers staff each workstation. The task involves assembling each order, placing it in a shipping carton, inserting packing material, taping the carton, and placing a computer-generated shipping label on each carton. Generally, each station can pack 200 cartons a day, and often more. However, there is variability, due to differences in orders, labels, and cartons. Question 4, data in excel sheet shows the number of cartons packed per day during a recent week. Is the variation among stations within the range attributable to chance, or do these samples indicate actual differences in the means. Perform the required hypothesis test at 1% level of significance.