Homework



Be sure to staple and label your work: the grader is not responsible for lost sheets. Homeworks will be due in class. If you turn in your HW late, you must give it to the grader directly. The grader is not obligated to grade your late HW if he/she/they already graded the other students' HWs because the grader has his/hers/their own work/study schedule to follow. If the grader does grade your late HW, there is a 25% penalty for up to 24 hours late, and 50% penalty for up to a week late.


  • Please consult the course moodle page for HWs after HW7. This page will no longer be maintained as of March 16 as we are transitioning to Moodle and distance learning.


  • HW 7: Due Thursday March 26.
    Section 9.6: 9.70, 9.74, 9.76
    Section 9.7: 9.80, 9.82, 9.84 (a),(b),(d), 9.90.


  • HW 6: Due Thursday March 5.
    Section 9.4: 9.37, 9.38(a), 9.39, 9.42 (Do not use factorization criterion--theorem 9.4--for problem 9.39. But you can use for this problem and 9.59 that the sum Y = Y_1+ ...+ Y_n is Poisson with parameter n*lambda.).
    Section 9.5: 9.56, 9.59, 9.64a.


  • HW 5: Due Thursday Feb 27.
    Section 9.2: 9.1, 9.3, 9.6. (For 9.3, check email from Feb 24 about the density function of Y_(n) order statistic.)
    Section 9.3: 9.15, 9.17, 9.20, 9.24, 9.25. (Hint for 9.24: for part a, use a theorem in Chap 7; for part b, think of W_n as an estimator for E(W_n) even though E(W_n) is a known ``target parameter''.)


  • HW 4: Due Thursday Feb 20.
    Section 8.7: 8.72 (with 95% confidence coefficient), 8.74, 8.79
    Section 8.8: 8.82, 8.90, 8.94
    Section 8.9: 8.96, 8.98


  • HW 3: Due Thursday Feb 13.
    Section 8.4: 8.23, 8.35
    Section 8.5: 8.39, 8.40, 8.41(a), 8.48(b,c) (you can assume 8.48(a))
    Section 8.6: 8.60, 8.61, 8.65.


  • HW 2: Due Thursday Feb 6.
    Section 8.2: #8.4, 8.6, 8.10, 8.12 (for Poisson distribution review section 3.8 and for uniform distribution review section 3.4)
    Section 8.4: #8.21, 8.23, 8.34, 8.35. Jan 30 UPDATE: since we did not finish Section 8.3-8.4 today, problems 8.23 and 8.35 will be due with HW 3 instead of HW 2.


  • HW 1: Due Thursday January 30. (If you added the course after the HW due date, please talk to me.)
    Review your Stats 515 notes and/or Chaps 1-7 in book. Unless otherwise indicated, all problems are from the book. Make sure you are using the correct version. (The 7th edition international version has some different problems than our 7th edition US version.) Do 7.11, 7.12, 7.21, 7.51, 7.52, 7.76, 7.77, 7.87.