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The data shown below were obtained on a highway. Use regression analysis to fit these data to the Greenshields model and determine (a) the

The data shown below were obtained on a highway. Use regression analysis to fit these data to the Greenshields model and determine (a) the mean free speed, (b) the jam density, (c) the capacity, and (d) the speed at maximum flow. Speed (mi/h) 14 25 32 41 52 57 Density (veh/mi) 85 70 55 41 20 15

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