Question: The article Analysis of Time Head ways on Urban Roads: Case Study from Riyadh (A. Al-Ghamdi, Journal of Transportation Engineering, 2001: 289294) presents a model

The article €œAnalysis of Time Head ways on Urban Roads: Case Study from Riyadh€ (A. Al-Ghamdi, Journal of Transportation Engineering, 2001: 289€“294) presents a model for the time elapsed between the arrival of consecutive vehicles on urban roads. Following are 137 arrival times (in seconds) along with the values expected from a theoretical model.

Time Observed Expected 0-2 18 23 2-4 28 18 4-6 14 16

Can you conclude that the theoretical model does not explain the observed values well?

Time Observed Expected 0-2 18 23 2-4 28 18 4-6 14 16 6-8 7 13 8-10 11 11 10-12 11 9. 1218 10 20 18-22 8 > 22 30 19

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