Introductory Statistics (2nd Edition)
Introductory Statistics (2nd Edition)
2nd Edition
ISBN: 9780321978271
Author: Robert Gould, Colleen N. Ryan
Publisher: PEARSON
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Chapter 2, Problem 1SE

Body Mass Index The Dotplot shows body mass index r (BMI) for 134 people according to the National Health and Nutrition Examination Survey (NHANES) in 2010, as reported in U.S.A Today.

a. A B U or more than 40 is considered morbidly obese. Report the number of morbidly obese

shown in the dotplot.

b. report the percentage of people who are morbidly obese. Compare this with an estimate from

2005 that 3% of people in the United Stated as that time were morbidly obese.

Chapter 2, Problem 1SE, Body Mass Index The Dotplot shows body mass index r (BMI) for 134 people according to the National

a.

Expert Solution
Check Mark
To determine

Determine the number of morbidly obese people from the dot plot.

Answer to Problem 1SE

The number of morbidly obese people is 11.

Explanation of Solution

According to the provided details, a person is considered to be morbidly obese if the Body Mass Index (BMI) of a person is above 40. The provided Dot plot shows the Body Mass Index of 134 people.

The number of people having the Body Mass Index (BMI) above 40 can be calculated by counting the number of dots on the right side of 40. Therefore, the number of morbidly obese people is 11.

b.

Expert Solution
Check Mark
To determine

Determine the percentage of people who are morbidly obese in 2010 and compare it with the percentage of people who were morbidly obese in 2005.

Answer to Problem 1SE

The percentage of people who are morbidly obese in 2010 is about 8.2%, which is higher than the percentage of people in 2005.

Explanation of Solution

The provided details show that, in 2005, 3% of the people in U.S were morbidly obese.

From the dot-plot that provides the data of the U.S. for the year 2010, the number of people who were morbidly obese is 11 and the total number of people in the survey is 134.

The percentage of people who are morbidly obese can be calculated as:

Percentageofpeoplewho weremorbidly obese=Numberofpeoplewhoweremorbidly obeseTotalNumberofpeople×100=11134×100=0.082×100=8.2%

Therefore, the required percentage is 8.2%.

This indicates that there is an increase in the percentage of people who were morbidly obese in 2010, as the percentage has increased from 3% (in 2005) to 8.2%.

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Chapter 2 Solutions

Introductory Statistics (2nd Edition)

Ch. 2 - Arm spans (Example 3) According to the ancient...Ch. 2 - Tuition The distribution of in-state annual...Ch. 2 - Ages of CEOs (Example 4) From the histogram in...Ch. 2 - Sleep Hours From the histogram shown in Exercise...Ch. 2 - Commute Times (Example 5) Use the histograms to...Ch. 2 - Spending on Clothes The histograms show the...Ch. 2 - Education (Example 6) In 2012, the General Social...Ch. 2 - Siblings The histogram shows the distribution of...Ch. 2 - Years of Education The GSS asked people how many...Ch. 2 - Hours Worked In the 2012 General Social Survey,...Ch. 2 - Matching Histograms match each of the following...Ch. 2 - Matching Histograms Match each of the following...Ch. 2 - Matching Match each description with the correct...Ch. 2 - Matching Match each description with the correct...Ch. 2 - Eating Out and jobs College students Jacqueline...Ch. 2 - Comparing Weights of Baseball and Soccer Players...Ch. 2 - Textbook Prices The table shows prices of 50...Ch. 2 - SAT scores The following table shows a random...Ch. 2 - Animal Longevity The following table in Exercise...Ch. 2 - Animal Gestation Periods The accompanying table...Ch. 2 - Tax Rate A StatCrunch survey asked people what...Ch. 2 - Pets A StatCrunch survey asked people whether they...Ch. 2 - Law School Tuition Data are shown for the cost of...Ch. 2 - Text Messages Recently, 115 users of StatCrunch...Ch. 2 - Beer, Calories Data are available on the number of...Ch. 2 - Beer, Alcohol Data are available on the percent...Ch. 2 - Changing Multiple-Choice Answers When Told Not to...Ch. 2 - Preventable Deaths According to the World Health...Ch. 2 - U.S. Distribution of wealth (Example 8) Michael...Ch. 2 - Education The graph shows the education of...Ch. 2 - Political Party Affiliation: Men The 2012 General...Ch. 2 - Political Party Affiliation Women The 2012 General...Ch. 2 - Prob. 43SECh. 2 - Retail Car Sales With gas prices rising, as they...Ch. 2 - Majors The table gives information on college...Ch. 2 - Adoptions The table gives information on the top...Ch. 2 - Garage The accompanying graph shows the...Ch. 2 - Body Image A student has gathered data on...Ch. 2 - Pie Chart of Sleep Hours The pie chart reports the...Ch. 2 - Age and Gender The following graph shows the ages...Ch. 2 - Musicians Survey: StatCrunch Graph The...Ch. 2 - Cell Phone Use Refer to the accompanying bar...Ch. 2 - Television The table shows the first few entries...Ch. 2 - Job The table shows the job categories for some...Ch. 2 - Hormone Replacement Therapy The use of the drug...Ch. 2 - E-Music The bar graph shows information reported...Ch. 2 - Hormone Replacement Therapy Again The following...Ch. 2 - Holding Your Breath A group of students held their...Ch. 2 - Global Temperatures The histograms show the...Ch. 2 - Employment after Law School Accredited law schools...Ch. 2 - Position for Breathing The graph shows the results...Ch. 2 - Opinions on Global Warming People were asked...Ch. 2 - Create a dotplot that has at least 10 observations...Ch. 2 - Create a dotplot that has at least 10 observations...Ch. 2 - Traffic Cameras College students Jeannette Mujica,...Ch. 2 - Ideal Weight Thirty-nine students (26 women and 13...Ch. 2 - MPH The graphs show the distribution of...Ch. 2 - Shoe Sizes The graph shows shoe sizes for men and...Ch. 2 - CEO Salaries Predict the shape of the distribution...Ch. 2 - Cigarettes A physician asks all of his patients to...Ch. 2 - Changing Multiple-Choice Answers When Told to Do...Ch. 2 - ER Visits for Injuries The graph shows the rates...
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