Adverse drug reactions to legally prescribed medicines are among the leading causes of drugrelated death in the United States. Suppose you investigate drug-related deaths in your city and find that 223 out of 250 incidences were caused by legally prescribed drugs and the rest were the result of illicit drug use. MINITAB was then used to form the 98% confidence interval for the proportion of drug-related deaths that are caused by legally prescribed drugs. Verify the MINITAB results that follow.

CI for One Proportion Sample X N Sample p 98% CI 1 223 250 0.892000 (0.846333, 0.937667)