14. An investigator plans to examine claims that the proportion of residents in school district A that has health insurance is more than 72%, A random sample of 100 residents yields 70 who have health insurance, Do the results support the claims? a. State null and alternative hypotheses. Is this a directional (one-tailed) or non-directional (two-tailed) test? b. As an investigator, what specific statistical test would you use