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Question: Gotex is considering two possible bathing suit designs for the 2008 summer season. One is called Nautical Design, and the other is Geometric Prints. Since the fashion industry is very competitive, Gotex needs to test before marketing the bathing suits. Ten randomly chosen top models are selected for modeling Nautical Design, and 10 other randomly chosen top models are selected to model Geometric Prints bathing suits. The results of the judges' ratings of the 20 bathing suits follow.

ND:     86, 90, 77, 81, 86, 95, 99, 92, 93, 85

GP:     67, 72, 60, 59, 78, 69, 70, 85, 65, 62

Is there evidence to conclude that one design is better than the other? If so, which one is it, and why?

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