“Tongue Piercing May Speed Tooth Loss, Researchers Say” is the headline of an article that appeared in the San Luis Obispo Tribune ( June 5, 2002). The article describes a study of a representative sample of 52 young adults with pierced tongues. The researchers found receding gums, which can lead to tooth loss, in 18 of the participants. Construct and interpret a 95% confidence interval for the proportion of young adults with pierced tongues who have receding gums.