An experiment was conducted to study the relationship between the ratings of a tobacco leaf grader and the moisture content of the tobacco leaves. Twelve leaves were rated by the grader on a scale of 1-10, and corresponding readings of moisture content were made.

Calculate rs. Do the data provide sufficient evidence to indicate an association between the grader's ratings and the moisture contents of the leaves?

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Moisture Content Leaf Grader's Rating .22 16 17 12 19 10 .12 05 10 16 09 12