finalexam

finalexam - IE 230 Seat Name Closed book and notes 120...

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

IE 230 Seat # ________ Name _______________________ Closed book and notes. 120 minutes. Cover page, five pages of exam. No calculator. No need to simplify answers. (2 points) I have, or will, complete a course evaluation. ____________________________________________________________ ...sign here. .. Score ___________________________ Final Exam, Fall 2010 (Dec 13) Schmeiser

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

View Full Document
Name _______________________ Closed book and notes. 120 minutes. Throughout this exam, consider an experiment that chooses a random sample X 1 , X 2 , . . . , X n from a population with cdf F , mean E( X ) = μ , variance V( X ) = σ 2 and median x 0.5 = F 1 (0.5). Let X d denote the sample mean, S 2 = [ Σ i = 1 n ( X i X d ) 2 ] / ( n 1) denote the sample variance, and X ( i ) the i th order statistic. 1. True or false. (2 points each) (a) T F A random sample contains independent observations. (b) T F A random sample contains identically distributed observations. (c) T F The abbreviation "iid" means independent and identically distributed. (d) T F A point estimate is a random variable; a point estimator is a number. (e) T F Independent observations are always identically distributed. (f) T F Identically distributed observations are always independent. (g) T F Independent observations can be mutually exclusive. (h) T F A linear combination of random variables is a random variable.
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/25/2011 for the course IE 230 taught by Professor Xangi during the Fall '08 term at Purdue.

Page1 / 6

finalexam - IE 230 Seat Name Closed book and notes 120...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online