Biology, 15.09.2021 14:00 bighomie28

A shopping mall wanted to determine whether the more expensive tough stuff floor wax was better than the cheaper steel seal floor wax at protecting its floor tiles against scratches. One liter of each brand of floor wax was applied to test sections of the main hall of the mall. The test sections were all the same size and were covered with the same kind of tiles. After 3 weeks the number of scratches in each of the test sections was counted to observe the wax's effectiveness

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A shopping mall wanted to determine whether the more expensive tough stuff floor wax was better than...