Log-in | Contact Jeff | Email Updates

Question 458:

In 1992, the FAA conducted 86,991 pre-employment drug tests on job applicants who were to be engaged in safety and security-related jobs, and found that 1,143 were positive. (a) Construct a 95 percent confidence interval for the population proportion of positive drug tests. (b) Why is the normality assumption not a problem, despite the very small value of p?

Not what you were looking for or need help?

Ask a new Question

Browse All 872 Questions

Search All Questions: