9. The pH levels and mercury levels of several lakes throughout Ohio are measured. Researchers do a regression analysis based on these measurements in order to predict mercury levels from pH levels....

Extracted text: 9. The pH levels and mercury levels of several lakes throughout Ohio are measured. Researchers do a regression analysis based on these measurements in order to predict mercury levels from pH levels. The observed measurements were pH levels between 3.0 and 12.0. Due to extrapolation, it would not be reasonable to predict the mercury level for a lake with pH level А. 1.0. В. 3.0. С. 7.0. D. 13.0. E. Both A and D.