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A study of the atmospheric pollution on the slopes opf the Blue Ridge Mountains was conducted. The levels of lead found in 70 fern moss
A study of the atmospheric pollution on the slopes opf the Blue Ridge Mountains was conducted. The levels of lead found in 70 fern moss specimens (y; in micorgrams of lead per gram of moss tissue) is collected from the mountain slopes, as well as the elevation of the moss specimen (x1; in feet) and the direction of the slope face (x2; 1 if east, 0 if west). A model is fit using both a second-order term for elevation and the interaction term between elevation and direction of slope face to model levels of lead. Results from R are given below. Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) -6.286e+00 3.206e+01 -0.196 0.845 ELEVATION 8.943e-03 2.609e-02 0.343 0.733 SLOPE1 3.148e+00 7.727e+00 0.407 0.685 I(ELEVATION^2) -1.429e-06 5.207e-06 -0.274 0.785 ELEVATION:SLOPE1 -1.305e-03 3.051e-03 -0.428 0.670 What is the estimated lead level for moss specimens on the west slope at an elevation of 1200 feet. Round your answer to two decimal places
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