The article “Root Dentine Transparency: Age Determination of Human Teeth Using Computerized Densitometric Analysis” (American Journal of Physical Anthropology [1991]: 25–30) described a study in which the objective was to predict age (y) from percentage of a tooth’s root with transparent dentine. The accompanying data are for anterior teeth.

Use the accompanying MINITAB output to decide whether the simple linear regression model is useful.

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X 15 19 31 39 41 44 47 48 55 65 y 23 52 65 55 32 60 78 59 61 60