An article in the Journal of Environmental Engineering reported the results of a study on the occurrence of sodium and chloride in surface streams in central Rhode Island. The following data are...

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Extracted text: An article in the Journal of Environmental Engineering reported the results of a study on the occurrence of sodium and chloride in surface streams in central Rhode Island. The following data are chloride concentration y (in milligrams per liter) and roadway area in the watershed x (in percentage). y 4.4 6.6 9.7 10.6 10.8 10.9 11.8 12.1 14.3 14.7 15 17.3 19.2 23.1 27.4 x 0.19 0.15 0.57 0.7 0.67 0.63 0.47 0.7 0.6 0.78 0.81 0.78 0.69 1.3 1.05 a. Find the simple linear regression model. b. Find an estimate of the coefficient of determination. C. Test the significance of the correlation coefficient. d. Find the mean chloride concentration for a watershed that has 1% roadway area. Construct a confidence interval for the estimate Use the editor to format your answer