Solutions to Homework 7
Statistics 302 Professor Larget
Textbook Exercises
11.56 Housing Units in the US (Graded for Accurateness) According to the 2010 US Census, 65% of housing units in the US are owner-occupied while the other 34% are renter-occupied.
Solutions to Homework 3
Statistics 302 Professor Larget
Textbook Exercises
3.20 Customized Home Pages A random sample of n = 1675 Internet users in the US in
January 2010 found that 469 of them have customized their web browsers home page to include
news
Solutions to Homework 4
Statistics 302 Professor Larget
Textbook Exercises
3.102 How Important is Regular Exercise? In a recent poll of 1000 American adults, the
number saying that exercise is an important part of daily life was 753. Use StatKey or other
Solutions to Homework 5
Statistics 302 Professor Larget
Textbook Exercises
4.79 Divorce Opinions and Gender In Data 4.4 on page 227, we introduce the results of a
May 2010 Gallup poll of 1029 US adults. When asked if they view divorce as morally acceptabl
Solutions to Homework 1
Statistics 302 Professor Larget
1.12 Countries of the World Information about the worlds countries is given in All Countries,
introduced in Data 1.2 on page 7. You can nd a description of the variables in Appendix B on
page 691. Fo
Chapter 2 R ggplot2 Examples
Bret Larget
February 5, 2014
Abstract
This document introduces many examples of R code using the ggplot2 library to accompany
Chapter 2 of the Lock 5 textbook. The primary data set used is from the student survey of this
cours
Chapter 3 R Bootstrap Examples
Bret Larget
February 19, 2014
Abstract
This document shows examples of how to use R to construct bootstrap condence intervals to
accompany Chapter 3 of the Lock 5 textbook. It also highlights the use of the R package ggplot2
Solutions to Homework 1
Statistics 302 Professor Larget
Textbook Exercises
2.13 Rock-Paper-Scissors Rock-Paper-Scissors, also called Roshambo, is a popular two-player
game often used to quickly determine a winner and loser. In the game, each player puts o
Chapter 11 R Probability Examples
Bret Larget
March 26, 2014
Abstract
This document shows some probability examples and R code that goes beyond the scope of
the Lock5 textbook.
1
2 2 Tables
To illustrate the ideas, we begin with an articial example where
Solutions to Homework 6
Statistics 302 Professor Larget
Textbook Exercises
5.29 (Graded for Completeness) What Proportion Have College Degrees? According
to the US Census Bureau, about 27.5% of US adults over the age of 25 have a bachelors level (or
highe
Solutions to Homework 9
Statistics 302 Professor Larget
Textbook Exercises
In Exercise 6.160, situations comparing two proportions are described. In each case, determine
whether the situation involves comparing proportions for two groups or comparing two
Statistics 302 Midterm 2
Larget, Spring 2014
Solutions
1. True/False Problems. 3 points each, 15 points total. Write very brief explanations.
(a) Circle either True or False (and explain/correct if False):
The random variable X is the number of heads in 1
Statistics 302 Midterm 1
Larget, Spring 2014
Solutions
1. True/False Problems. 3 points each, 15 points total. Write very brief explanations.
(a) Circle either True or False (and explain/correct if False):
When data is strongly skewed to the left, the mea
Solutions to Homework 8
Statistics 302 Professor Larget
Textbook Exercises
6.12 Impact of the Population Proportion on SE Compute the standard error for sample proportions from a population with proportions p = 0.8, p = 0.5, p = 0.3, and p = 0.1 using a
s