# HW14 - Question 7[Basic Problem 6.57(a,b Question 8[Basic...

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

ECE 302, Homework #14, due date: 4/27/2011 http://cobweb.ecn.purdue.edu/ chihw/11ECE302S/11ECE302S.html Question 1: [Intermediate / Exam Level] Problem 6.22(b,c). Question 2: [Intermediate / Exam Level] Suppose X 1 , . . . , X n are independent random variables. Let Y = X 1 + X 2 + · · · + X n . Derive the following formula. 1. E ( Y ) = E ( X 1 ) + E ( X 2 ) + · · · + E ( X n ) 2. Var( Y ) = n i =1 Var( X i ) + 2 n i =1 n j = i +1 Cov( X i , X j ). Question 3: [Intermediate / Exam Level] Problem 6.32. Question 4: [Intermediate / Exam Level] Problem 6.35. Question 5: [Basic] Problem 6.42(a). Question 6: [Basic] Problem 6.54(a). Then ﬁnd the variances σ 2 1 , σ 2 2 , and the correlation coeﬃcient between X 1 and X 2 . Then answer Problem 6.54(c)

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.

Unformatted text preview: Question 7: [Basic] Problem 6.57(a,b). Question 8: [Basic] Problem 7.1. Question 9: [Intermediate / Exam Level] Problem 7.2. Question 10: [Basic] Problem 7.8. Question 11: [Basic] Problem 7.10. Question 12: [Basic] Problem 7.11. Question 13: [Intermediate / Exam Level] Problem 7.13(a) Question 14: [Intermediate / Exam Level] Problem 7.14(a). Question 15: [Basic] Problem 7.15. Question 16: [Intermediate / Exam Level] Problem 7.22. Question 17: [Intermediate / Exam Level] Problems 7.17 and 7.24 Question 18: [Intermediate / Exam Level] Problem 7.28....
View Full Document

## This note was uploaded on 02/12/2012 for the course ECE 302 taught by Professor Gelfand during the Spring '08 term at Purdue.

### Page1 / 2

HW14 - Question 7[Basic Problem 6.57(a,b Question 8[Basic...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online