One research study of illegal drug use among 12- to 17-year-olds reported a decrease in use (from 11.4% in 1997) to

9.8% now. Suppose a survey in a large high school reveals that, in a random sample of

1,052 students, 98 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.

Need help finding the standard score, for the sample proportion and p value