One research study of illegal drug use among​ 12- to​ 17-year-olds reported a decrease in use​ (from 11.4% in​ 1997) to 9.89.8​% now. Suppose a survey in a large high school reveals​ that, in a random sample of 1 comma 0551,055 ​students, 9595 report using illegal drugs. Use a 0.05 significance level to test the​ principal's claim that illegal drug use in her school is below the current national average. Part 2 Find the test statistic.   zequals=enter your response here ​(Round to two decimal places as​ needed.)