Math 263 - Homework

Math 263 Homework

Homework Policy

Homework assignments consisting of problems from the required textbook will be posted below throughout the semester. Feedback on your solutions will be provided by me or the TA. I will ask the TA to do a few things:

Grade a subset of 4-6 of the problems. If you are missing a crucial piece, or don’t seem to understand the concepts, the TA will make a comment and will not give credit for that problem.
Check to see that you did all the problems. Ungraded problems that you turned in are graded on effort only.
On the front of the homework, you will get “Satisfactory” (S) or “Not Satisfactory” (N). If you get NS, there will be a comment about what you should do to get a satisfactory score (e.g., "finish all problems", "correct #2.13", etc.). In general, you will just need to redo problems you didn’t complete or missed to earn a satisfactory score. Please redo problems on a new sheet of paper, and turn in your old assignment with the corrected work.

Formatting Homework:

Please write your name, and the class name (263 or Intro Stats). I have another "stats" class so this will help the TAs distinguish!
If you handwrite youe homework, please write legibly and answer the questions completely. Organize your answers in a consistent way---in one column from top to bottom is preferred.
Please staple your paper and remove any notebook tabs

Solutions

HW 1:

Note: Qualitative corresponds to categorical, quantitative means numerical.
Section 1.1, # 1-13 (odd), 26
Section 1.2, # 4 (skip (a)), 5 (skip (a), also identify the experimental units, the variables, and the variable types)
Section 1.3, # 21
Section 1.4, # 24, 26
Section 2.1, # 13, 14

HW 2:

Use calculator for longer computations!
Section 2.3, # 6-9, 19, 24(a), 28 (ignore Tchebycheff), 30
Section 2.4, # 20, 21, 23
Section 3.1 # 10
Section 3.2, # 19, 23, 27 (for #27, you don’t need to pro- vide the plot in your work)

HW 3:

No quiz on this homework
Section 4.2, # 11-16, 18, 27, 31, 32
Section 4.3, # 16, 23, 28
Section 4.4, # 1, 17, 21, 22, 23, 30, 31, 35

HW 4: Due Wednesday, Feb 22

Section 5.1, # 17, 21, 23, 24, 35
Section 5.2, # 7, 9, 25, 34-36, 47, 52
Section 6.1, # 17, 19

HW 5: Due Monday, Feb 27

All problems (for practice, not for tunring in):

Section 6.2, # 36, 37, 42, 44, 53, 55, 60, 68
Section 7.2, # 8,9
Section 7.3, # 21, 23, 32

For HW submission (these are the ones you will turn in to me):

Section 6.2, # 36, 42, 44, 68
Section 7.2, # 8,9
Section 7.3, # 21, 23

HW 6: Due Friday, Mar 17

All problems:

Section 7.5, # 1, 28, 31
Section 8.2, # 7,8, 11, 12, 29, 32 (a-d)

Pick two from each section and turn in for exam practice (graded on completion only)

HW 7: Due Friday, Mar 24

Turn in for HW:

Section 8.3, #24, 35
Section 8.4, # 16, 18
Section 8.5, # 21, 22

HW 8: Due Friday, Mar 31

All problems:

Section 9.1, #1, 2, 9 (state hypotheses in plain language and in mathematical terms)
Section 9.4, # 8 (p-value approach only), 9, 11, 16
Section 9.5, # 12, 14, 16. For #16, calculate two-sided CI instead (“practical significance” defined on p. 362)

Turn in for HW:

Section 9.1, #2, 9 (state hypotheses in plain language and in mathematical terms)
Section 9.4, #9, 11
Section 9.5, #16. For #16, calculate two-sided CI instead

HW 9: Due Friday, Apr 14

All problems:

Section 10.2, # 1, 11, 20, 24, 33(b), 34
Section 10.3, #14, 20
Section 10.5, 11, 14
Section 10.6, 19, 22

Turn in two problems from each section (graded on completion only for exam practice)

HW 10: Due Friday, Apr 28

All problems:

Section 11.2, # 7, 12, 13, 14, 16

Turn in:

Section 11.2, # 7, 14, 16

Review Problems for final exam

Pick 3 problems from Ch 12, and 2 problems from Ch 13. Turn in to replace lowest HW grade (this assignment graded on completion)

For all problems: sketch any required plots by hand. Include F statistic and p-value in all ANOVA tables you make.
Section 12.2, # 4, 12, 13, 15
Section 12.3 # 12 (skip plot)
Section 12.5, # 13
Section 13.2, #6, 8, 16