Which statement is correct about the Big Bang Theory? It is an everyday life theory because it is based on observation. It is a scientific theory because it cannot be changed or replaced. It is an everyday life theory because it is not supported by evidence. It is a scientific theory because it is a widely accepted explanation of nature.

In an experiment examining the effects tai chi on arthritis pain, callahan (2010) selected a large sample of individuals with doctor-diagnosed arthritis. half of the participants immediately began a tai chi course and the other half (the control group) waited 8 weeks before beginning. at the end of 8 weeks, the individuals who had experienced tai chi had less arthritis pain that those who had not participated in the course.