Homework

There are two types of homework assignments in this course, online homework (which will be graded) and pen-and-paper textbook homework (which will not be graded).

Online Homework

Online homework will be done using MyStatLab. If you enrolled after the first day of classes, it might take a day or two before you make it into the system. Access MyStatLab through TritonEd.

Access Codes:  To get an access code for MyStatLab, you can either (1) purchase the textbook from the UCSD Bookstore, which comes bundled with a MyStatLab access code, or (2) purchase electronic access for one quarter only from the MyStatLab website. When you first log in to MyStatLab through TritonEd, you will be prompted to enter an access code or purchase electronic access.

Grading:  You may miss up to 10% of the overall online homework points without penalty to your grade. Consequently, I will not change your grade on individual questions for any reason.

Due Dates:  Online homework due dates are subject to change based on variations in course schedule or technological issues. All online homework assignments are due at 11:00 P.M., unless specified otherwise. Any changes will be announced on Piazza and in lecture.

Syllabus Quiz:  The Syllabus Quiz is posted in MyStatLab. It has 10 questions, each one multiple choice or True/False. You have one attempt per question. The quiz is "open syllabus," so you may have the syllabus open when you take the quiz.


Textbook Homework

These assignments will not be turned in and will be not graded; however, certain exam questions are based on textbook homework problems, so understanding the solutions to these problems should help you perform better on the exams. Some of these problems overlap with the online homework.

You are expected to follow the Academic Integrity Policy when completing your homework.

Homework Zero     (Due Wed, Apr 10 at 11:00 pm—ONLINE ONLY)
  • Syllabus Quiz: This is a quiz about the syllabus. (See details above.)
  • Chapter 0 Homework: This is a set of problems intended to introduce you to MyStatLab and some of the features that you might encounter as you work through assignments in this course.

Reading:  The course syllabus.

Homework 1     (Due Wed, Apr 10 at 11:00 pm)
  • Chapter 3: 19, 23, 25, 26, 27, 45, 49
  • Chapter 4: 27, 29, 31, 32, 33
  • Chapter 5: 3, 4, 13, 15
  • Chapter 6: 19, 23, 27, 31, 33, 35, 45

Reading:  For this assignment, the relevant portions of the textbook are Chapter 3; Sections 4.1 - 4.3 of Chapter 4; Sections 5.1 and 5.2 of Chapter 5; and Chapter 7 (but you can skip the sections on Kendall's Tau and Spearman's Rho). I also suggest that you skim Chapter 1 and pp. 17-20 (Section 2.1) and p. 31 (Simpson's paradox) of Chapter 2.

Homework 2     (Due Wed, Apr 17 at 11:00 pm)
  • Chapter 7: 27, 35, 37, 39, 53, 59, 75   [In 37, assume correlation is positive.]
  • Chapter 8: 19, 25, 36, 39, 41
  • Chapter 9: 9, 11   [In 10, log is base 10 and ln is natural log (base e).]

Reading:  Chapters 7, 8, and 9.

Homework 3     (Due Wed, Apr 24 at 11:00 pm)
  • Chapter 13: 15, 27, 39, 41, 47, 49, 52   [In 41c, assume the disjoint events have nonzero probability.]
  • Chapter 14: 15, 17, 21, 27, 31, 35, 47, 49, 51, 53, 59

Reading:  Chapters 13 and 14.

Homework 4     (Due Wed, May 1 at 11:00 pm)
  • Chapter 15: 11, 19, 25, 31, 35, 37, 51   [In 35e, Y1 and Y2 are independent RVs with the same mean and SD as Y.]
  • Chapter 16: 19, 21, 25, 29, 31, 33, 37

Reading:  Chapter 15 (but skip Correlation and Covariance, pp. 399-400) and Sections 16.1 - 16.3 of Chapter 16.

Homework 5     (Due Wed, May 8 at 11:00 pm)
  • Chapter 16: 47, 48, 49
  • Handout (Continuous Random Variables): 1, 2, 3, 4, 5, 6, 7, 8

Reading:  Section 16.6 (the Poisson model) of Chapter 16 and the continuous random variables handout (available in TritonEd).

Homework 6     (Due Wed, May 15 at 11:00 pm)
  • Chapter 5: 9, 38, 43, 49
  • Chapter 11: 25, 27, 29, 41cd, 45
  • Chapter 15: 43, 45abc, 47
  • Chapter 17: 13, 27, 37, 49, 51, 55

Reading:  pp. 119-132 of Chapter 5; Chapter 11; Sections 16.4 (Approximating the Binomial with a Normal Model) and 16.5 (The Continuity Correction) of Chapter 16; and Chapter 17.

Homework 7     (Due Wed, May 22 at 11:00 pm)
  • Chapter 18: 13, 15, 21, 27, 31, 33, 35, 37
  • Chapter 19: 11, 13, 15, 21, 23, 35, 41

Reading:  Chapters 18 and 19. Note: for hypothesis testing problems, you must show how you calculated your test statistic. You do not need to show work for the step of going from the test statistic to the p-value, as this step comes from tables or a calculator. You should always write a concluding sentence in which you explain your conclusion in the context of the problem.

Homework 8     (Due Wed, May 29 at 11:00 pm)
  • Chapter 20: 15, 17, 19, 23, 25, 27, 41
  • Chapter 21: 15, 17, 19, 37, 39

Reading:  Chapters 20 and 21. Note: for hypothesis testing problems, you must show how you calculated your test statistic. You do not need to show work for the step of going from the test statistic to the p-value, as this step comes from tables or a calculator. If you are using tables rather than a calculator, it is OK just to report an interval containing the p-value. You should always write a concluding sentence in which you explain your conclusion in the context of the problem.

Homework 9     (Due Wed, Jun 5 at 11:00 pm)
  • Chapter 22: 57, 59, 68, 72
  • Chapter 23: 9, 12, 13, 15, 17, 27abc

Reading:  Sections 22.5 and 22.6 of Chapter 22 (but you can skip "Tukey's Quick Test" and "A Rank Sum Test"); Chapter 23 (but you can skip "The Sign Test").

Homework 10     (No online homework.)
  • Chapter 25: 25, 35, 37, 39, 41, 43, 47, 49
  • Chapter 24: 11, 13, 15, 19, 39, 41, 47

Reading:  Chapter 25 (but you can skip 25.7 on "Logistic Regression") and Chapter 24.