Exercise 1 An article in an Environmental Engineering journal reported the results of a study on the occurrence of sodium and chloride on the surface of streams in Rhode Island. The following data presents the chloride concentration designated as y (in milligrams per liter) and the filming area in the basin as x (in percent). 4.4 6.6 x 0.19 + 0.15 10.6 10.8 10.9 0.9 0.67 0.63 11.8 X 0.47 14.3 15 17.3 0.78 0.81 0.78 19.2 x 25.2 0.69 1.5 27.7 31.8 39.5 1.05 1.06 1.74 1.62 a. Fit the simple linear regression using the least squares method. Start by looking for the following values: EX= EY= Ex2 EXY= Applicable Formulas: The values for Sex and Spy are: Sxx = Ex? (x n Sxy = Sxy = Exyi - EXEL, y!) n