A large sporting-goods store located in Florida is planning a renovation that will result in an increase in the floor space for one department. The manager of the store has narrowed her choice about which department’s floor space to increase to two possibilities: the tennis-equipment department or the swimming accessories department. The manager would like to enlarge the tennis equipment department because she believes that this department improves the overall image of the store. She decides, however, that if the swimming accessories department can be shown to have higher gross sales, she will choose that department. She has collected each of the two departments’ weekly gross sales data for the past 32 weeks. Which department should be enlarged?