The article Modeling of Urban Area Stop-andGo Traffic Noise (P. Pamanikabud and C

Chapter 6, Problem 10

(choose chapter or problem)

The article “Modeling of Urban Area Stop-and- Go Traffic Noise” (P. Pamanikabud and C. Tharasawatipipat, Journal of Transportation Engineer- ing, 1999:152–159) presents measurements of traffic noise, in dBA, from 10 locations in Bangkok, Thailand. Measurements, presented in the following table, were made at each location, in both the acceleration and deceleration lanes.

           Location        Acceleration        Deceleration

1        78.1        78.6

2        78.1        80.0

3        79.6        79.3

4        81.0        79.1

5        78.7        78.2

6        78.1        78.0

7        78.6        78.6

8        78.5        78.8

9        78.4        78.0

10        79.6        78.4

Can you conclude that there is a difference in the mean noise levels between acceleration and deceleration lanes?