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Spring
2016

Homework

There are two types of homework: Online and Written.

Online Homework

Online homework will be done through MyStatLab. All versions of the book (in the bookstore) come bundled with MyStatLab; however, electronic access to the textbook comes with MyStatLab, so you can register for MyStatLab without buying the book if you want electronic access to the book only.

To register for MyStatLab, follow this link and register using the course ID (bowers58317).
(You must use your UCSD email in order to receive credit for the online homework.)

Handout: Instructions for registering for MyStatLab.
Having trouble registering for MyStatLab?   Contact Pearson Student Support at this link.

Note: In addition to Homework Assignments 1-9 (which correspond to the textbook assignments), there is a Syllabus Quiz and an assignment called Homework Zero.
  • The Syllabus Quiz assesses your knowledge of the syllabus. You have ONE attempt on each question. You may have the syllabus open while you take the quiz. The Syllabus Quiz is worth 10 points towards your online homework score.
  • Homework Zero is an assignment created by Pearson to help you learn to use MyStatLab. It is worth 12 points towards your online homework score.

Written Homework

You should turn in your homework assignments by dropping them off in your TA's homework dropbox, which is in the basement of Applied Physics and Mathematics (AP&M), before 5:00 PM on the due date. Please write your discussion section number at the top of your homework.

Please work carefully, and show the steps in your calculations, not just the final answer. Your solutions will be graded both for completeness and correctness. Because the department has limited resources available for homework grading, only a few handwritten problems will be assigned each week.

Odd-numbered problems will rarely be assigned because full solutions appear in a student's solutions manual. Even-numbered, end-of-chapter problems are typically similar to the preceding odd-numbered problem, so you are encouraged to work the preceding odd-numbered problem first and check your answer to make sure you are on the right track.

Please remember that you are expected to follow the  Academic Integrity Policy  when completing your homework.

Textbook Exercises   (Updated 23 Feb 2016)

The notation "6.20" means "Chapter 6, Exercise 20".

Homework 1     (Due Wed, Apr 06 at 5:00 pm)
  • Chapter 3: 20, 24, 25, 26, 28ab, 44, 50
  • Chapter 4: 26, 30, 31, 32
  • Chapter 5: 4, 14, 16
  • Chapter 6: 20, 24, 28, 31, 32, 34, 46ab

Turn in:  4.30, 5.4, 6.28, 6.32

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 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 13 at 5:00 pm)
  • Chapter 7: 28, 36, 38, 40, 53, 60, 76   [In 38, assume correlation is positive.]
  • Chapter 8: 20, 26, 36, 38, 41
  • Chapter 9: 10, 12   [In 10, log is base 10 and ln is natural log (base e).]

Turn in:  7.36, 7.60, 8.20, 8.26

Reading:  Chapters 7, 8, and 9.

Homework 3     (Due Wed, Apr 20 at 5:00 pm)
  • Chapter 13: 16, 28, 40, 42, 48, 50, 52  
    [In problem 42c, assume the disjoint events have nonzero probability.]
  • Chapter 14: 15, 17, 22, 28, 32, 34, 36, 48, 50, 51, 53, 60

Turn in:  13.42, 13.52, 14.48, 14.60

Reading:  Chapters 13 and 14.

Homework 4     (Due Wed, Apr 27 at 5:00 pm)
  • Chapter 15: 12b, 20, 26, 32, 36, 38, 52   [In problem 36e, X1, X2, and X3 are independent random variables with the same mean and standard deviation as X.]
  • Chapter 16: 20, 22, 26, 30, 32, 38

Turn in:  15.38, 15.52, 16.26, 16.38

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 04 at 5:00 pm)
  • Chapter 16: 48, 50
  • Handout: 1, 2, 3, 4, 5, 6, 7, 8, 9

Turn in:  Handout Problems 1-9

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

Homework 6     (Due Wed, May 11 at 5:00 pm)
  • Chapter 5: 10, 38, 44, 50bc
  • Chapter 11: 26abc, 29, 33abd, 36abc, 41cd
  • Chapter 15: 44, 46, 48
  • Chapter 17: 14, 28, 36, 40, 50, 52, 56

Turn in: 11.26abc, 11.36abc, 17.14, 17.52

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 18 at 5:00 pm)
  • Chapter 18: 14, 16, 22, 28, 31, 34, 36a, 38ab
  • Chapter 19: 12, 14, 16, 22, 24abcd, 36, 42
  • Chapter 21: 16, 18, 20, 38, 40

Turn in:  18.14, 18.34, 19.24abcd, 21.40

Reading:  Chapters 18, 19, 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. You should always write a concluding sentence in which you explain your conclusion in the context of the problem.

Homework 8     (Due Wed, May 25 at 5:00 pm)
  • Chapter 20: 16, 18, 20, 24, 27, 38abdef, 42
  • Chapter 23: 10, 12, 14, 16, 18, 28

Turn in:  20.20, 20.38abdef, 23.14, 23.28

Reading:  Chapters 20 and Chapter 23 (but skip "The Sign Test"). 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 01 at 5:00 pm)
  • Chapter 22: 58, 60, 68, 72
  • Chapter 25: 26, 36, 38, 40, 42a, 44, 48, 50

Turn in:  22.58, 25.36, 25.38, 25.40

Reading:  Sections 22.5 and 22.6 of Chapter 22; Chapter 25 (but skip 25.7 on "Logistic Regression").

Homework 10     (No handwritten problems are turned in.)
  • Chapter 24: 11, 13, 15, 19, 39, 41, 47

Reading:  Chapter 24.