Consider the Gorman and Toman asphalt data analyzed in Section 10.4. Recall that run is an indicator variable.
a. Perform separate analyses of those data for run \(=0\) and run \(=1\).
b. Compare and contrast the results of the two analyses from part a.
c. Copare and contrast the results of the two analyses from part a with the results of the analysis from Section 10.4.