Solutions for Introductory Statistics
Problem 2.1TI:
For the Park City basketball team, scores for the last 30 games were as follows (smallest to...Problem 2.2TI:
The following data show the distances (in miles) from the homes of off-campus statistics students to...Problem 2.3TI:
The table shows the number of sins and losses the Atlanta Hawks have had in 42 seasons. Create a...Problem 2.4TI:
In a survey, 40 people were asked how many times per year they had their car in the shop for...Problem 2.5TI:
The population in Park City is made up of children, working-age adults, and retirees. Table 2.10...Problem 2.6TI:
Park city is broken down into six voting districts. The table shows the percent of the total...Problem 2.7TI:
The following data are the shoe sizes of 50 male students. The sizes ate continuous data since shoe...Problem 2.8TI:
The following data are the number of sports played by 50 student athletes. The number of sports is...Problem 2.9TI:
The following data represent the number of employees at various restaurants in New You City. Using...Problem 2.10TI:
Construct a frequency polygon of U.S. Presidents’ ages at inauguration shown in Table 2.15.Problem 2.12TI:
The following table is a portion of a data set from wwwworldbank.org. Use the table to construct a...Problem 2.13TI:
For the following 11 salaries, calculate the IQR and determine if any salaries are outliers. The...Problem 2.14TI:
Find the interquartile range for the following two data sets and compare them. Test Scores for Class...Problem 2.15TI:
Forty bus drivers were asked how many hours they spend each day running their routes (rounded to the...Problem 2.16TI:
Refer to the Table 223. Find the third quartile. What is another name for the third quartile?Problem 2.17TI:
Listed are 29 ages for Academy Award sinning best actors in order from smallest to largest. 18; 21;...Problem 2.18TI:
Listed are 30 ages for Academy Award winning best actors in order from smallest to largest. 18; 21;...Problem 2.19TI:
For the 100-meter dash, the third quartile for times for finishing the race was 113 seconds....Problem 2.20TI:
On a 60 point written assignment, the 80th percentile for the number of points earned was 49....Problem 2.21TI:
During a season, the 40th percentile for points scored per player in a game is eight. Interpret the...Problem 2.23TI:
The following data are the number of pages In 40 books on a shelf. Construct a box plot using a...Problem 2.24TI:
The folloising data set show’s the heights in inches for the boys in a class of 40 students. 66; 66;...Problem 2.25TI:
Follow the steps you used to graph a box-and-whisker plot for the data values shown. 0 5; 5; 15; 30;...Problem 2.26TI:
The following data show the number of months patients typically wait on a transplant list before...Problem 2.27TI:
In a sample of 60 households, one house is worth $2,500,000. Half of the rest are worth $280,000,...Problem 2.28TI:
The number of books checked out from the library from 25 students are as follows: 0; 0; 0; 1; 2; 3;...Problem 2.29TI:
Five credit scores are 680, 680, 700, 720, 720. The data set is bimodal because the scores 680 and...Problem 2.30TI:
Mails conducted a study on the effect that playing video games has on memory recall. As part of her...Problem 2.31TI:
Discuss the mean, median, and mode for each of the following problems. Is there a pattern between...Problem 2.32TI:
On a baseball team, the ages of each of the players are as follows: 21; 21; 22; 23; 24; 24; 25; 25;...Problem 2.33TI:
The following data show the different types of pet food stores in the area carry. 6; 6; 6; 6; 7; 7;...Problem 2.34TI:
Find the standard deviation for the data from the previous example. First, press the STAT key and...Problem 2.35TI:
Two swimmers, Angie and Beth, from different teams, wanted to find out who has the fastest time for...Problem 1P:
For each of the following data sets, create a stem plot and identify any outliers. The miles per...Problem 2P:
For each of the following data sets, create a stem plot and identify any outliers. 2. The height in...Problem 3P:
For each of the following data sets, create a stem plot and identify any outliers. The data are the...Problem 4P:
For each of the following data sets, create a stem plot and identify any outliers. The data are...Problem 5P:
For each of the following data sets, create a stem plot and identify any outliers. 5. In a survey,...Problem 6P:
For each of the following data sets, create a stem plot and identify any outliers. 6. In a survey,...Problem 7P:
For each of the following data sets, create a stem plot and identify any outliers. 7. Several...Problem 8P:
The students in Ms. Ramirez’s math class have birthdays in each of the four seasons. Table 2.40...Problem 9P:
Using the data from Mrs. Ramirez’s math class supplied in Exercise 2.8, construct a bar graph...Problem 10P:
David County has six high schools. Each school sent students to participate In a county-side science...Problem 11P:
Use the data from the David County science competition supplied in Exercise 2.10. Construict a bar...Problem 12P:
Sixty-five randomly selected car salespersons were asked the number of cars they generally sell in...Problem 15P:
What is the difference between relative frequency and frequency for each data value in Table 2.42?Problem 16P:
What is the difference between cumulative relative frequency and relative frequency for each data...Problem 17P:
To construct the histogram for the data in Table 2.42. determine appropriate minimum and maximum x...Problem 19P:
Construct a frequency polygon from the frequency distribution for the 50 highest ranked countries...Problem 20P:
Use the two frequency tables to compare the life expectancy of men and women from 20 randomly...Problem 21P:
Construct a times series graph for (a) the number of male births, (b) the number of female births,...Problem 22P:
The following data sets List full time police per 100,000 citizens along with homicides per 100,000...Problem 23P:
Listed are 29 ages for Academy Award winning best actors in order from smallest to largest. 18; 21;...Problem 24P:
Listed are 32 ages for Academy Award winning best actors in order from smallest to largest. 18; 18;...Problem 25P:
Jesse was ranked 37th in his graduating class of 180 students. At hat percentile is Jesse’s ranking?Problem 26P:
a. For runners in a race, a low time means a faster run. The winners in a race have the shortest...Problem 27P:
a. For runners in a race, a higher speed means a faster run. Is it more desirable to have a speed...Problem 28P:
On an exam, would it be more desirable to earn a grade with a high or low percentile? Explain.Problem 29P:
Mina is waiting in line at the Department of Motor Vehicles (DMV). Her wait time of 32 minutes is...Problem 30P:
In a survey collecting data about the salaries earned by recent college graduates, Li found that het...Problem 31P:
In a study collecting data about the repair costs of damage to automobiles in a certain type of...Problem 32P:
The University of California has two criteria used to set admission standards for freshman to be...Problem 33P:
Suppose that you are buying a house. You and your realtor have determined that the most expensive...Problem 34P:
First quartile = _______Problem 35P:
Second quartile = median = 50th percentile =Problem 36P:
Third quartile = _______Problem 37P:
Interquartile range (IQR) = _____ — _____Problem 39P:
percentile = _______Problem 40P:
Use the following information to answer the next two exercises. Sixty-five randomly selected car...Problem 41P:
Use the following information to answer the next two exercises. Sixty-five randomly selected car...Problem 42P:
Find the mean for the following frequency tables.Problem 43P:
Use the following information to answer the next three exercises: The following data show the...Problem 44P:
Use the following information to answer the next three exercises: The following data show the...Problem 45P:
Use the following information to answer the next three exercises: The following data show the...Problem 46P:
Use the following information to answer the next three exercises: Sixty-five randomly selected car...Problem 47P:
Use the following information to answer the next three exercises: Sixty-five randomly selected car...Problem 48P:
Use the following information to answer the next three exercises: Sixty-five randomly selected car...Problem 49P:
Use the following information to answer the next three exercises State whether the data are...Problem 50P:
Use the following information to answer the next three exercises State whether the data are...Problem 51P:
Use the following information to answer the next three exercises State whether the data are...Problem 52P:
When the data are skewed left, what is the typical relationship between the mean and median?Problem 53P:
When the data are symmetrical, what is the typical relationship between the mean and median?Problem 55P:
Describe the shape of this distribution. Figure 2.32Problem 56P:
Describe the relationship between the mode and the median of this disthbution. Figure 2.33Problem 57P:
Describe the relationship between the mean and the median of this distribution. Figure 2.34Problem 58P:
Describe the shape of this distribution. Figure 2.35Problem 59P:
Describe the relationship between the mode and the median of this distribution. Figure 2.36Problem 60P:
Are the mean and the median the exact same in this distribution? Why or why not? Figure 2.37Problem 61P:
Describe the shape of this distribution. Figure 2.38Problem 62P:
Describe the relationship between the mode and the median of this distribution. Figure 2.39Problem 63P:
Describe the relationship between the mean and the median of this distribution. Figure 2.40Problem 64P:
The mean and median for the data are the same. 3; 4; 5; 5; 6; 6; 6; 6; 7; 7; 7; 7; 7; 7; 7 Is the...Problem 65P:
Which is the greatest, the mean, the mode, or the median of the data set? 11; 11; 12; 12; 12; 12;...Problem 66P:
Which is the least, the mean, the mode, and the median of the data set? 56; 56; 56; 58; 59; 60; 62;...Problem 67P:
Of the three measures, which tends to reflect skewing the most, the mean, the mode, or the median?...Problem 68P:
In a perfectly symmetrical distribution, when would the mode be different from the mean and median?Problem 69P:
Use the following information to answer the next rsv exeirises: The following data are the distances...Problem 70P:
Use the following information to answer the next two exercises: The following data are the distances...Problem 71P:
Two baseball players, Fredo and Karl, on different teams wanted to find out who had the higher...Problem 72P:
Use Table 2.57 to find the value that is three standard deviations: a. above the mean b. below the...Problem 73P:
Find the standard deviation for the following frequency tables using the formula. Check the...Problem 74H:
Student grades on a chemistry exam were: 77, 78, 76, 81, 86, 51, 79, 82, 84, 99 a. Constrict a...Problem 75H:
Table 2.61 contains the 2010 obesity rates in U.S. states and Washington, DC. a. Use a random number...Problem 76H:
Suppose that three book publishers were interested in the number of fiction paperbacks adult...Problem 77H:
Often, cruise ships conduct all on-board transactions, with the exception of gambling, on a cashless...Problem 78H:
Twenty-five randomly selected students were asked the number of movies they watched the previous...Problem 79H:
The percentage of people who own at most three t-shirts costing more than 519 each is approximately:...Problem 80H:
If the data were collected by asking the first 111 people who entered the store, then the type of...Problem 81H:
Following are the 2010 obesity rates by U.S. states and Washington. DC. Construct a bar graph of...Problem 82H:
The median age for U.S. blacks currently is 30.9 years; for U.S. whites it is 42.3 years. a. Based...Problem 83H:
Six hundred adult Americans were asked by telephone poll, "What do you think constitutes a...Problem 84H:
Given the following box plot: Figure 2.41 a. which quarter has the smallest spread of data? What is...Problem 85H:
The following box plot shows the U.S. population for 1990, the latest available year. Figure 2.42 a....Problem 86H:
In a survey of 2O-year-olds in China, Germany, and the United States, people re asked the number of...Problem 87H:
Given the following box plot, answer the questions. Figure 2.44 a. Think of an example (in words)...Problem 88H:
Given the following box plots, answer t* questions. Figure 2.45 a. In complete sentences, explain...Problem 89H:
A survey was conducted of 130 purchases of new BMW 3 series cars, 130 purchasers of new BNIVV 5...Problem 90H:
Twenty-five randomly selected students were asked the number of movies they watched the previous...Problem 91H:
The most obese countries in the world have obesity rates that range from 11.4% to 74.6°o. This data...Problem 92H:
Table 2.72 gives the percent of children under five considered to be underweight. What is the best...Problem 93H:
The median age of the U.S. population in 1980 was 30.0 years. In 1991, the median age was 33.1...Problem 94H:
Use the following information to answer the neat nine exercises: The population parameters below...Problem 95H:
Use the following information to answer the neat nine exercises: The population parameters below...Problem 96H:
Use the following information to answer the neat nine exercises: The population parameters below...Problem 97H:
Use the following information to answer the neat nine exercises: The population parameters below...Problem 98H:
Use the following information to answer the neat nine exercises: The population parameters below...Problem 99H:
Use the following information to answer the neat nine exercises: The population parameters below...Problem 100H:
Use the following information to answer the neat nine exercises: The population parameters below...Problem 101H:
Use the following information to answer the neat nine exercises: The population parameters below...Problem 102H:
Use the following information to answer the neat nine exercises: The population parameters below...Problem 103H:
Three students were applying to the same graduate school. They came from schools with different...Problem 104H:
A music school has budgeted to purchase three musical instruments. They plan to purchase a piano...Problem 105H:
An elementary school class ran one mile with a mean of II minutes and a standard deviation of three...Problem 106H:
The most obese countries in the world have obesity rates that range from 11.4% to 4.6°%. This data...Problem 107H:
Table 2.76 gives the percent of children under five considered to be underweight. What is the best...Problem 108BITH:
Santa, Clara Country, Ca, has approximately 27,873 Japanese-Amercians. Their ages are follows: a....Problem 109BITH:
Javier and Ercilia are supervisors at a shopping mall. Each was given the task of estimating the...Problem 110BITH:
What is the IQR? a. 8 b. 11 C. 15 d. 35Problem 111BITH:
What is the mode? a. 19 b. 19.5 c. 1and 20 d. 22.65Problem 112BITH:
Is this a sample or the entire population? a. sample b. entire population c. neitherProblem 113BITH:
Twenty-five randomly selected students were asked the number of movies they watched the previous...Problem 114BITH:
Forty randomly selected students were asked the number of pairs of sneakers they owned. Let X = the...Problem 115BITH:
Following are the published weights (in pounds) of all of the team members of the San Francisco...Problem 116BITH:
One hundred teachers attended a seminar on mathematical problem solving. The attitudes of a...Problem 117BITH:
Refer to Figure 2.50 determine which of the following are tnze and which are false. Explain your...Problem 118BITH:
In a recent issue of the IFFF Spectrum, 84 engineering conferences were announced. Four conferences...Problem 119BITH:
A survey of enrollment at 35 community colleges across the United States yielded the following...Problem 120BITH:
Use the following information to answer the next two exercises. X = the number of days per week that...Browse All Chapters of This Textbook
Chapter 1 - Sampling And DataChapter 2 - Descriptive StatisticsChapter 3 - Probability TopicsChapter 4 - Discrete Random VariablesChapter 5 - Continuous Random VariablesChapter 6 - The Normal DistributionChapter 7 - The Central Limit TheoremChapter 8 - Confidence IntervalsChapter 9 - Hypothesis Testing With One SampleChapter 10 - Hypothesis Testing With Two Samples
Book Details
Introductory Statistics follows the scope and sequence of a one-semester, introduction to statistics course and is geared toward students majoring in fields other than math or engineering. This text assumes students have been exposed to intermediate algebra, and it focuses on the applications of statistical knowledge rather than the theory behind it. The foundation of this textbook is Collaborative Statistics, by Barbara Illowsky and Susan Dean, which has been widely adopted. Introductory Statistics includes innovations in art, terminology, and practical applications, all with a goal of increasing relevance and accessibility for students. We strove to make the discipline meaningful and memorable, so that students can draw a working knowledge from it that will enrich their future studies and help them make sense of the world around them. The text also includes Collaborative Exercises, integration with TI-83,83+,84+ Calculators, technology integration problems, and statistics labs.
Sample Solutions for this Textbook
We offer sample solutions for Introductory Statistics homework problems. See examples below:
More Editions of This Book
Corresponding editions of this textbook are also available below:
INTRODUCTORY STATISTICS
13th Edition
ISBN: 2810015182961
Introductory Statistics
16th Edition
ISBN: 9781948847001
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