1011SEM2-ST3239

# 1011SEM2-ST3239 - NATIONAL UNIVERSITY OF SINGAPORE...

This preview shows pages 1–3. Sign up to view the full content.

· . NATIONAL UNIVERSITY OF SINGAPORE EXAMINATION ST3239 - Survey Methodology (Semester II: 2010-2011) April 2011 Time Allowed: 2 Hours INSTRUCTIONS TO CANDIDATES 1. This examination paper contains Five (5) questions on THREE (3) pages includ - ing the cover page. 2. Answer ALL the questions for TOTAL 100 marks. 3. All NOTATIONS used here are the same as those used in the lecture notes. 4. Write your answers neatly ON THE ANSWER BOOK. 5. This is a closed textbook and notes examination. The students are allowed to bring two A4 size help sheets with both sides written. Only non-programmable calculators are allowed. 1

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

View Full Document
ST3239 Unless otherwise stated, use 5% as the significance level and ZO.025 = 2. 1. (a). (10%) Suppose {Y1,'" ,Yn} is a simple random sample from a population with population size N. Also assume that the mean J.ly of this population is known. Find an unbiased estimator for Var(O), where 0 = n- 1 2:7=1 (Yi J.ly)2. (b). (10%) Suppose that we wish to estimate the total number of the fish N in a lake. Let t be number of fish captured and tagged in the
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