Question: Figure 1 shows a scatterplot of the acidity (pH) for a sample ofFlorida lakes vs the average mercury level (ppm) found in fish taken from

Figure 1 shows a scatterplot of the acidity (pH) for a sample ofFlorida lakes vs the average mercury level (ppm) found in fish taken from each lake. There appears to be a negative trend in the scatterplot, and we wish to test whether there is significant evidence of a negative association between pH and mercury levels.

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