{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# t1 - Stat 5101 First Midterm Exam October 9 2002 Name...

This preview shows pages 1–2. Sign up to view the full content.

Stat 5101 First Midterm Exam October 9, 2002 Name Student ID The exam is closed book and closed notes. You may use one 8 1 2 × 11 sheet of paper with formulas, etc. You may use a calculator, but shouldn’t need to. Put all of your work on this test form (use the back if necessary). Show your work or give an explanation of your answer. No credit for numbers with no indication of where they came from. 1. [15 pts.] A box contains 20 light bulbs of which 3 are defective. Suppose 5 light bulbs are selected at random without replacement from the box. What is the probability that none of the selected light bulbs is defective. You may express the answer as a formula that evaluates to a number. The actual numerical answer is not required. 2. [20 pts.] Suppose a drug test is used to screen employees of a company for drug use. Suppose that if the test is applied to an actual drug user the probability that the person will (correctly) test positive is 0.96 and the probability that the person will (falsely) test negative is 0.04.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern