1. Referring to the pollution data of Table 1: Table 1: Measures of Solids and Chemical Oxygen Demand Soilds Reduction, x (%) 4 Chemical Oxygen Demand, y (%) Soilds Reduction, x Chemical Oxygen...

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Extracted text: 1. Referring to the pollution data of Table 1: Table 1: Measures of Solids and Chemical Oxygen Demand Soilds Reduction, x (%) 4 Chemical Oxygen Demand, y (%) Soilds Reduction, x Chemical Oxygen Demand, y (%) (%) 6. 36 37 10 37 36 12 22 37 39 15 16 38 38 18 16 39 37 25 29 39 45 28 26 40 39 25 35 30 32 30 41 42 30 42 44 31 42 41 32 43 39 33 34 43 40 33 33 45 45 35 37 47 50 36 35 45 30 36 51 38 38 a. Estimate the regression line. b. Find a 95 % confidence interval for B in the regression line uyl = a+ Bx. c. Using the estimated value of b, test the hypothesis that b= 1.0. d. Find a 95% confidence interval for a in the regression line uyl = a+ Bx. e. Using the estimated value of a, test the hypothesis that a = 0 at 0.05 level of significance.