ELEC 471, Fall 2010
Prof. Rich Kozick

Homework 8


Date Assigned: Friday, October 29, 2010
Date Due: Friday, November 5, at 11:00 AM
(due on Friday because ELEC 480 exam is on Nov. 3)

  1. Reading: Please continue to study Chapter 2, Sections 2.8-2.10, and begin studying Chapter 4, Sections 4.1-4.3 and 4.6-4.7. (Only study the material related to discrete random variables.) We will study Chapter 3 on continuous random variables during the week of November 8.

  2. Exam 2 will be on Wednesday, November 10 at 3:00 PM. The topics for the exam will include all of Chapter 2, the beginning of Chapter 4 (sections 4.1-4.3), and Homeworks 6, 7, 8.
    The exam will be open-book and open-notes, and please bring a calculator. The exam will not include a Matlab component.

  3. Please solve the following problems at the end of Chapter 2 and submit solutions in class on Nov. 5 at 11:00 AM.
    Section 2.8: 1, 5 (show the numerical computations for part (a) and then check your answer using Appendix A), 7, 9 (hint: find Var[X] and use problem 2.8.7), and 10.
    Section 2.9: 6.
    Section 4.2: 1 and 4.
    Section 4.3: 1.
    Notes: In Problem 2.8.9, the definition of q is opposite to the definition of q in Problem 2.6.5. Please replace the last sentence in Problem 2.8.9 with the following:
    "How small must the error probability q be to ensure that the jitter is less than 2 milliseconds?"
    Also, define the jitter as the standard deviation of the random variable T in Problem 2.6.5.

    Clarification for Problem 2.9.6, part (b). The conditioning event N >= 20 is equivalent to having 19 consecutive tests without a failure. (The problem states 20 consecutive tests without a failure.)

  4. We will have a short quiz on November 3 at 3:00 PM similar to the material on Homework 7 or a Matlab exercise with pairs of random variables.

  5. Presentations: The following students are asked to present their solutions on November 5 at 11:00 AM. Each pair of students will present the solution together.
    Problem 2.8.10: Emily Deuink and Elise Terrell
    Problem 2.9.6: Chris May and Tyler Skalski
Thank you.