Researchers conducted a study of helmet use and head injuries among skiers and snowboarders. Results of the study included a “P-Value” (probability value) of 0.004 (based on data from “Helmet Use and Risk of Head Injuries in Alpine Skiers and Snowboarders,” by Sullheim, et al., Journal of the American Medical Association, Vol. 295, No. 8). That probability value refers to particular results from the study. In general, what does a probability value of 0.004 tell us?