In the hypothesis testing approach of Jerzy Neyman and Egon Pearson, a null hypothesis is contrasted with an alternative hypothesis, and the two hypotheses are distinguished on the basis of data, with certain error rates. Proponents of each approach criticize the other approach.
In geography, relief refers to the highest and lowest elevation points in an area. Mountains and ridges are typically the highest elevation points, while valleys and other low-lying areas are the lowest. Relief is essential to understanding the topography of an area.
A voice-over claims that Light Relief is great for back pain, arthritis, tension headaches, bursitis, tennis elbow, hip and joint pain, muscle strain, spasms, stiffness and tendinitis. It can even help relieve stubborn chronic pain. Sylmark Inc., the Lake Balboa-based company behind Light Relief, didn't respond to several requests for comments.