For the past decade, rubber powder has been used in asphaltcement to improve
Chapter 12, Problem 18(choose chapter or problem)
For the past decade, rubber powder has been used in asphaltcement to improve performance. The article ExperimentalStudy of Recycled Rubber-Filled High-Strength Concrete(Magazine of Concrete Res., 2009: 549556) includes aregression of onbased on the following sample data:x 112.3 97.0 92.7 86.0 102.0 99.2 95.8 103.5 89.0 86.7y 75.0 71.0 57.7 48.7 74.3 73.3 68.0 59.3 57.8 48.5a. Obtain the equation of the least squares line, and interpretits slope.b. Calculate and interpret the coefficient of determination.c. Calculate and interpret an estimate of the error standarddeviation s in the simple linear regression model.
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