From fall 1998 through mid 1999, Malaysia was the site of an encephalitis outbreak caused by the Nipah virus, a paramyxovirus that appears to spread from pigs to workers on pig farms. As reported by K. Goh et al. in the paper “Clinical Features of Nipah Virus Encephalitis among Pig Farmers in Malaysia” (New England Journal of Medicine, Vol. 342, No. 17, pp. 1229–1235), neurologists from the University of Malaysia found that, among 94 patients infected with the Nipah virus, 30 died from encephalitis.
a. Find a 90% confidence interval for the percentage of Malaysians infected with the Nipah virus who will die from encephalitis.
b. Interpret your answer in part (a).