"Contraception Shots Work in Male Monkeys" tells about an injection that results in levels of certain antibodies that are high enough to prevent conception. "In the experiments, designed in the United States and carried out in India, seven of the nine males tested developed high antibody levels. Five of the seven recovered fertility once the immunization stopped."22 Can a normal approximation be used to set up a confidence interval for the proportion of all monkeys that would develop high antibody levels, or for the proportion that would recover fertility, or both of these, or neither of these? Explain.