Assignment #8
Chapter 6: problems 2, 3, 4, 5, 11, 12, 13, 17R (note for problem 17 you need to read about the
Wilcoxon/Mann-Whitney test, which is a nonparametric test you can run when the normality
assumptions cannot be verified).
Problem 17, con
Assignment #6
Chapter 4: 54, 60, 61, 63, 64, 70, 77, 78, 83, 85, 86, 87, 91, and the following:
We often need to know if a data set could possibly be coming from a normal distribution. For the data
sets below, use R to make relative frequency histogr
Assignment #1
1. Introduce yourself to the class by posting a short autobiography (about a paragraph or two) on
the discussion board. Among other things, let us know where you are, what you studied as an
undergraduate and where, what you think your c
Assignment #13
Chapter 10: 2, 3, 4, 6, 7, 8, 10, 18, 19, 21, 24
Gender vs. Political Party. I surveyed ten men and ten women. Two of the men and six of the women
were Democrats. Do the data suggest men are more likely to be Democrat than women?
Assignment #11
Chapter 8: 1, 2, 3, 4, 5, 6R, 7R, 8, 9, 10.
ANOVA: Investigating equality of treatment means by examining variation. The goal of this problem is
to provide an intuitive feel for how analysis of variance (ANOVA) works. Open the datase
Assignment #14
Chapter 10: 25, 26, 27, 28, 29R, 30R, 35R, 32, 34, 42, 43, 54
> D of the number of pages in a randomly
chosen book to behave according to the probability distribution
P(D = d) = log10 (1+1/d), for d in cfw_1, 2, 3, 4, 5, 6, 7, 8,
Assignment #4
Chapter 4: 1, 5, 10, 11, 12, 13, 16, 18, 19, 21, 22, 26, 29, 33, and these:
Pets Bite. Suppose 10% of dogs bite, 5% of cats bite, and 90% of birds bite. 50% of pets are dogs, 5% of
pets are cats, and 45% of pets are birds. If Little J
Assignment #3
R
R
R
Chapter 3: 26, 27, 28, 29, 30, 31, 34 , 35 , 37, 39, 45 , 46R, 53, 69R (be sure to eliminate the last row of
- data[1:51,]), 70, 71.
What in the World? dtZtKK
Feel free to use pictures or made-up data in your explanation.
NFL
Assignment #2
hZZFor such problems, be sure to submit your code with your
homework, and also to submit any graphs or output. Use whatever you like (such as your calculator) for
the other problems.
Probably the best way to learn to use R is to do a
Assignment #7
R
R
Chapter 5: problems 5, 6, 7, 14, 15, 18, 20 , 21
Bootstrap Confidence Intervals. Here is an intuitive way to make confidence intervals for just about any
population parameter, and even when the population distribution is unknown
Assignment #5
Chapter 4: 36, 39, 40, 44, 45, 46, 50, 51, and these:
Bad Eggs. Based on experience, you (the local grocer) know 4.2% of ACME eggs arrive to your store
cracked, and this percentage is acceptable to you per a contract with ACME. Then t