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In an article "Shelf-Space Strategy in Retailing," published Test the hypothesis # 1 = # 2 = . . . = / 5 at the 0.05 level of in Proceedings: Southern Marketing Association, the effect of shelf height on the supermarket sales of canned dog food is significance for the data of Table 13.1 on absorption of moisture by various types of cement aggregates. investigated. An experiment was conducted at a small supermarket for a period of 8 days on the sales of a single Table 13.1: Absorption of Moisture in Concrete Aggregates brand of dog food, referred to as Arf dog food, involving three Aggregate: 1 2 3 4 5 levels of shelf height: knee level, waist level, and eye level. During each day, the shelf height of the canned dog food was 551 595 639 417 563 randomly changed on three different occasions. The 457 580 615 449 631 remaining sections of the gondola that housed the given brand 450 508 511 517 522 were filled with a mixture of dog food brands that were both 731 583 573 438 613 familiar and unfamiliar to customers in this particular 499 633 648 415 656 geographic area. Sales, in hundreds of dollars, of Arf dog food 632 517 677 555 679 per day for the three shelf heights are given. Based on the Total 3320 3416 3663 2791 3664 16,854 data, is there a significant difference in the average daily sales Mean 553.33 569.33 610.50 465.17 610.67 561.80 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 85 82 94 85 86 93 87 78 90 81 81 91 80 86 94 79 77 90 87 81 87 93