Question No 2 [3+31 The water pollution control field is presented by the tanning industry. Tannery wastes are chemically complex. They are characterized by high values of chemical oxygen demand, volatile solids, and other pollution measures. Consider the experimental data in the following table, which were obtained from 5 samples of chemically treated waste in a study conducted at Virginia Tech. Find correlation coefficient and estimate linear regression line Solid Reduction, x (%) Oxygen Demand Reduction, y %) 3.3 2.9 6.9 8.1 10.1 12.3 13.8 14.2 16.2 15.4