A manufacturer of paint used for marking road surfaces developed a new formulation that needs to be tested for durability. One question concerns the concentration of pigment in the paint. If the concentration is too low, the paint will fade quickly; if the concentration is too high, the paint will not adhere well to the road surface. The manufacturer applies paint at various concentrations to sample road surfaces and obtains a durability measurement for each sample.
a. Have your computer program calculate a regression equation with durability ­predicted by concentration. Interpret the slope coefficient.
b. Find the coefficient of determination. What does it indicate about the predictive value of concentration?

  • CreatedNovember 21, 2015
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