A certain drug can be used to reduce the acid produced by the body and heal damage to the esophagus due to acid reflux. The manufacturer of the drug claims that more than 9191​% of patients taking the drug are healed within 8 weeks. In clinical​ trials, 219 of 236 patients suffering from acid reflux disease were healed after 8 weeks. Test the​ manufacturer's claim at the α=0.05 level of significance.