Question

an article in the Journal of Environmental Engineering (Vol. 115, No. 3, 1989, pp. 608-619) reported the results of a study on the occurrence of sodium and chloride in surface streams in central Rhode Island. The following data wre chloride soncentration y (in milligrams per liter) and roadway area in the watershed x (in percentage). 

x y	0.162.3	0.424.5	0.8532.9	0.3423.6	0.2412.5	0.1131.2	0.7810.9	0.326.6	0.644.8
x y	0.6911.3	0.2420.5	0.8331.2	0.3427.8	0.4513.2	0.2811.9	0.1827.7	0.1219.6	0.7821.4
x y	1.8913.4	1.7021.8	1.2312.1	0.236.2	0.433.3	0.692.5	1.5210.2	1.8311.4	1.614.6

Does a simple linear regression model seem appropriate here? Fit the simple linear regression model using the method of least squares.What is the least squares model of the slope? What is the least square model of the y-intercept? Round off your answer to three decimal points

Answer 1

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