Physical properties of six flame-retardant fabric samples were investigated in the article "Sensory and Physical Properties of Inherently Flame-Retardant Fabrics" (Textile Research, 1984: 61-68). Use the accompanying data and a .05 significance level to determine whether a linear relationship exists between stiffness x (mg-cm) and thickness y (mm). Is the result of the test surprising in light of the value of r?

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x 7.98 24.52 12.47 6.9224.11 35.71 у| .28 .65 .32 .27 .81 .57