In an article "Shelf-Space Strategy in Retailing", published in Test the hypothesis /1 = /2 = /3 = /4 = us at 0.05 level of Proceedings: Southem Marketing Association, the effect of shelf significance for the data of Table 13.1 on absorption of moisture height on the supermarket sales of canned dog food is by various types of cement aggregates. investigated. An experiment was conducted at a small Absorption of Moisture in Concrete Aggregates supermarket for a period of 8 days on the sales of a single brand Aggregate 1 2 3 4 5 of dog food, referred to as Arf dog food, involving three levels of 551 595 639 417 shelf height: knee level, waist level, and eye level. During each 563 457 580 615 449 631 day, the shelf height of the canned dog food was randomly 450 508 511 517 522 changed on three different occasions. The remaining sections of 731 583 573 438 613 the gondola that housed the given brand were filled with a mixture 499 633 648 415 656 of dog food brands that were both familiar and unfamiliar to 632 517 677 555 679 customers in this geographic area. Sales, in hundreds of dollars, Total 3320 3416 3663 2791 3664 16854 of Arf dog food per day for the three shelf heights are given. Based Mean 553.33 569.33 610.50 465.17 610.67 561.80 on the data, is there a significant difference in the average daily sales of this dog food based on shelf height? Use a 0.01 level of significance. Shelf Height Knee Level Waist Level Eye Level 77 88