The retailing manager of Meijer supermarket chain in Michigan wants to determine whether product location has any effect on the sale of children toys. Two different aisle locations are considered: front and rear. A random sample of 18 stores is selected, with 6 stores randomly assigned to each aisle location. The size of the display area and price of the product are constant for all the stores. At the end of one-month trial period, the sales volumes (in thousands of dollars) of the product in each store are as shown below: 
-At the 0.05 level of significance, is there evidence of a significant difference in average sales among the various aisle locations?
Definitions:
Digestive Process
The complex series of physical and chemical changes that food undergoes from ingestion to absorption into the bloodstream.
Inflammation
A biological response to injury or infection, characterized by swelling, redness, pain, and sometimes loss of function.
Liver
A vital organ in the human body involved in numerous metabolic processes, including detoxification, protein synthesis, and the production of biochemicals necessary for digestion.
Upper GI Series
A series of X-rays taken of the upper digestive system, including the esophagus, stomach, and first part of the small intestine, often using a contrast medium to enhance visibility.
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