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Colgate is trying new toothpaste formulations to address 'tooth sensitivity'. A random sample of 15 participants were asked to rate their tooth sensitivity (scale of 0-10) to certain foods after using 'toothpaste A' compared to their sensitivity after using 'toothpaste 3'. Their scores are below. Is there evidence that tooth sensitivity is different between the two toothpastes? Use alpha of 0.05. ToothpasteA9.3 8.2 5.9 4.5 8.0 4.2 7.4 1.5 3.9 5.5 6.0 3.0 7.2 1.8 4.4 Toothpaste B9.0 8.3 9.2 5.8 8.2 4.9 7.0 2.3 4.2 4.9 7.0 2.8 8.1 4.9 4.9