Question: The article Effect of Granular Subbase Thickness on Airfield Pavement Structural Response (K. Gopalakrishnan and M. Thompson, Journal of Materials in Civil Engineering, 2008:331342) presents

The article €œEffect of Granular Subbase Thickness on Airfield Pavement Structural Response€ (K. Gopalakrishnan and M. Thompson, Journal of Materials in Civil Engineering, 2008:331€“342) presents a study of the effect of the subbase thickness (in mm) on the amount of surface deflection caused by aircraft landing on an airport runway. Two landing gears, one simulating a Boeing 747 aircraft, and the other a Boeing 777 aircraft, were trafficked across four test sections of runway. The results are presented in the following table.
Section 3 2 4 Boeing 747 Boeing 777 4.01 3.87 3.72 3.76 4.57 4.48 4.36 4.43

Can you conclude that the mean deflection is greater for the Boeing 777?

Section 3 2 4 Boeing 747 Boeing 777 4.01 3.87 3.72 3.76 4.57 4.48 4.36 4.43

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