Psychology and Human Behavior
Our emotional reaction to different colors affects advertising, product design, and even architecture. Three subway-tunnel walkways of identical length were painted different colors. A random sample of adults was selected in each tunnel and secretly timed (in seconds) as they walked through the tunnel. The data are given in the following table.
![48_Psychology and Human Behavior.png](https://secure.tutorsglobe.com/CMSImages/48_Psychology and Human Behavior.png)
Use the Kruskal-Wallis test with a = 0.01 to determine whether there is any evidence that the tunnel-walking-time populations are different. Assume the underlying populations are continuous.