In an article Shelf-Space Strategy in Retailing, published in the Proceedings: Southern Marketing Association, the effect of shelf height on the supermarket sales of canned dog food is investigated. An experiment was conducted at a small supermarket for a period of 8 days on the sales of a single brand of clog food, referred to as Arf dog food, involving three levels of shelf height: knee level, waist level, and eye level. During each day the shelf height of the canned clog food was randomly changed on three different occasions. The remaining sections of the gondola that housed the given brand were filled with a mixture of dog food brands that were both familiar and unfamiliar to customers in this particular geographic area. Sales in hundreds of dollars, of Arf dog food per day for the three shelf heights are as follows. Is there a significant difference in the average daily sales of this dog food based on shelf height? Use a, 0.01 level ofsignificance.

Shelf Height Knee Level Waist Level Eve Level 88 94 93 90 91 94 90 85 77 82 86 78 81 86 77 85 87 81 80 79 87 81 87 93