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Math Statistics Elementary Statistics Plus MyLab Statistics with Pearson eText -- Access Card Package (7th Edition) (What's New in Statistics)

Using the Empirical Rule In Exercises 29–34, use the Empirical Rule. 31. Use the sample statistics from Exercise 29 and assume the number of vehicles in the sample is 75. (a) Estimate the number of vehicles whose speeds are between 63 miles per hour and 71 miles per hour. (b) In a sample of 25 additional vehicles, about how many vehicles would you expect to have speeds between 63 miles per hour and 71 miles per hour?

Using the Empirical Rule In Exercises 29–34, use the Empirical Rule. 31. Use the sample statistics from Exercise 29 and assume the number of vehicles in the sample is 75. (a) Estimate the number of vehicles whose speeds are between 63 miles per hour and 71 miles per hour. (b) In a sample of 25 additional vehicles, about how many vehicles would you expect to have speeds between 63 miles per hour and 71 miles per hour?

Elementary Statistics Plus MyLab Statistics with Pearson eText -- Access Card Package (7th Edition) (What's New in Statistics)

Elementary Statistics Plus MyLab Statistics with Pearson eText -- Access Card Package (7th Edition) (What's New in Statistics)

7th Edition

ISBN: 9780134684901

Author: Ron Larson, Betsy Farber

Publisher: PEARSON

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Textbook Question

Chapter 2.4, Problem 31E

Using the Empirical Rule In Exercises 29–34, use the Empirical Rule.

31. Use the sample statistics from Exercise 29 and assume the number of vehicles in the sample is 75.

(a) Estimate the number of vehicles whose speeds are between 63 miles per hour and 71 miles per hour.
(b) In a sample of 25 additional vehicles, about how many vehicles would you expect to have speeds between 63 miles per hour and 71 miles per hour?

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Chapter 2.4, Problem 30E

Chapter 2.4, Problem 32E

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Chapter 2 Solutions

Elementary Statistics Plus MyLab Statistics with Pearson eText -- Access Card Package (7th Edition) (What's New in Statistics)

Ch. 2.1 - Construct a frequency distribution using the...Ch. 2.1 - Using the frequency distribution constructed in...Ch. 2.1 - Use the frequency distribution from Try It...Ch. 2.1 - Use the frequency distribution from Try It...Ch. 2.1 - Use the frequency distribution in Try It Yourself...Ch. 2.1 - Use the frequency distribution from Try It...Ch. 2.1 - Use technology and the frequency distribution from...Ch. 2.1 - What are some benefits of representing data sets...Ch. 2.1 - Why should the number of classes in a frequency...Ch. 2.1 - What is the difference between class limits and...

Ch. 2.1 - What is the difference between relative frequency...Ch. 2.1 - After constructing an expanded frequency...Ch. 2.1 - What is the difference between a frequency polygon...Ch. 2.1 - True or False? In Exercises 710, determine whether...Ch. 2.1 - True or False? In Exercises 710, determine whether...Ch. 2.1 - True or False? In Exercises 710, determine whether...Ch. 2.1 - Prob. 10E Ch. 2.1 - In Exercises 1114, use the minimum and maximum...Ch. 2.1 - In Exercises 1114, use the minimum and maximum...Ch. 2.1 - In Exercises 1114, use the minimum and maximum...Ch. 2.1 - In Exercises 1114, use the minimum and maximum...Ch. 2.1 - Reading a Frequency Distribution In Exercises 15...Ch. 2.1 - Reading a Frequency Distribution In Exercises 15...Ch. 2.1 - Use the frequency distribution in Exercise 15 to...Ch. 2.1 - Use the frequency distribution in Exercise 16 to...Ch. 2.1 - Graphical Analysis In Exercises 19 and 20, use the...Ch. 2.1 - Graphical Analysis In Exercises 19 and 20, use the...Ch. 2.1 - Graphical Analysis In Exercises 21 and 22, use the...Ch. 2.1 - Graphical Analysis In Exercises 21 and 22, use the...Ch. 2.1 - Graphical Analysis In Exercises 23 and 24, use the...Ch. 2.1 - Graphical Analysis In Exercises 23 and 24, use the...Ch. 2.1 - Prob. 25E Ch. 2.1 - Graphical Analysis In Exercises 25 and 26, use the...Ch. 2.1 - Use the ogive in Exercise 25 to approximate (a)...Ch. 2.1 - Use the ogive in Exercise 26 to approximate (a)...Ch. 2.1 - Constructing a Frequency Distribution In Exercises...Ch. 2.1 - Constructing a Frequency Distribution In Exercises...Ch. 2.1 - Constructing a Frequency Distribution and a...Ch. 2.1 - Constructing a Frequency Distribution and a...Ch. 2.1 - Constructing a Frequency Distribution and a...Ch. 2.1 - Constructing a Frequency Distribution and a...Ch. 2.1 - Constructing a Frequency Distribution and a...Ch. 2.1 - Constructing a Frequency Distribution and a...Ch. 2.1 - Constructing a Frequency Distribution and a...Ch. 2.1 - Constructing a Frequency Distribution and a...Ch. 2.1 - Constructing a Frequency Distribution and a...Ch. 2.1 - Constructing a Frequency Distribution and a...Ch. 2.1 - Constructing a Cumulative Frequency Distribution...Ch. 2.1 - Constructing a Cumulative Frequency Distribution...Ch. 2.1 - In Exercises 43 and 44, use the data set and the...Ch. 2.1 - In Exercises 43 and 44, use the data set and the...Ch. 2.1 - What Would You Do? You work at a bank and are...Ch. 2.1 - What Would You Do? The admissions department for a...Ch. 2.1 - Writing Use the data set listed and technology to...Ch. 2.2 - Use a stem-and-leaf plot to organize the points...Ch. 2.2 - Using two rows for each stem, revise the...Ch. 2.2 - Use a dot plot to organize the points scored by...Ch. 2.2 - The numbers of earned degrees conferred (in...Ch. 2.2 - Every year, the Better Business Bureau (BBB)...Ch. 2.2 - The lengths of employment and the salaries of 10...Ch. 2.2 - Use the table in Example 7 to construct a time...Ch. 2.2 - Name some ways to display quantitative data...Ch. 2.2 - What is an advantage of using a stem-and-leaf plot...Ch. 2.2 - In terms of displaying data, how is a...Ch. 2.2 - How is a Pareto chart different from a standard...Ch. 2.2 - Putting Graphs in Context In Exercises 58, match...Ch. 2.2 - Putting Graphs in Context In Exercises 58, match...Ch. 2.2 - Putting Graphs in Context In Exercises 58, match...Ch. 2.2 - Putting Graphs in Context In Exercises 58, match...Ch. 2.2 - Graphical Analysis In Exercises 912, use the...Ch. 2.2 - Graphical Analysis In Exercises 912, use the...Ch. 2.2 - Graphical Analysis In Exercises 912, use the...Ch. 2.2 - Prob. 12E Ch. 2.2 - Graphical Analysis In Exercises 1316, give three...Ch. 2.2 - Graphical Analysis In Exercises 1316, give three...Ch. 2.2 - Graphical Analysis In Exercises 1316, give three...Ch. 2.2 - Graphical Analysis In Exercises 1316, give three...Ch. 2.2 - Graphing Data Sets In Exercises 1732, organize the...Ch. 2.2 - Graphing Data Sets In Exercises 1732, organize the...Ch. 2.2 - Prob. 19E Ch. 2.2 - Graphing Data Sets In Exercises 1732, organize the...Ch. 2.2 - Graphing Data Sets In Exercises 1732, organize the...Ch. 2.2 - Graphing Data Sets In Exercises 1732, organize the...Ch. 2.2 - Graphing Data Sets In Exercises 1732, organize the...Ch. 2.2 - Graphing Data Sets In Exercises 1732, organize the...Ch. 2.2 - Graphing Data Sets In Exercises 1732, organize the...Ch. 2.2 - Graphing Data Sets In Exercises 1732, organize the...Ch. 2.2 - Graphing Data Sets In Exercises 1732, organize the...Ch. 2.2 - Graphing Data Sets In Exercises 1732, organize the...Ch. 2.2 - Hourly Wages Use a scatter plot to display the...Ch. 2.2 - Salaries Use a scatter plot to display the data...Ch. 2.2 - Engineering Degrees Use a time series chart to...Ch. 2.2 - Construction Use a time series chart to display...Ch. 2.2 - Basketball Display the data below in a...Ch. 2.2 - Phone Screen Sizes Display the data below in a dot...Ch. 2.2 - Favorite Season Display the data below in a Pareto...Ch. 2.2 - Favorite Day of the Week Display the data below in...Ch. 2.2 - A Misleading Graph? A misleading graph is not...Ch. 2.2 - Prob. 38E Ch. 2.2 - A Misleading Graph? A misleading graph is not...Ch. 2.2 - Prob. 40E Ch. 2.2 - Law Firm Salaries A back-to-back stem-and-leaf...Ch. 2.2 - Yoga Classes The data sets at the left show the...Ch. 2.2 - Choosing an Appropriate Display Use technology to...Ch. 2.3 - Find the mean of the points scored by the 51...Ch. 2.3 - Find the median of the points scored by the 51...Ch. 2.3 - The points scored by the winning teams in the...Ch. 2.3 - Find the mode of the points scored by the 51...Ch. 2.3 - In a survey, 1534 adults were asked, How much do...Ch. 2.3 - Remove the data entry 65 from the data set in...Ch. 2.3 - In Example 7, your grade in the two-credit course...Ch. 2.3 - Use a frequency distribution to estimate the mean...Ch. 2.3 - True or False? In Exercises 14, determine whether...Ch. 2.3 - True or False? In Exercises 14, determine whether...Ch. 2.3 - True or False? In Exercises 14, determine whether...Ch. 2.3 - True or False? 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In Exercises 710, determine whether...Ch. 2.5 - True or False? In Exercises 710, determine whether...Ch. 2.5 - True or False? In Exercises 710, determine whether...Ch. 2.5 - True or False? In Exercises 710, determine whether...Ch. 2.5 - Finding Quartiles, Interquartile Range, and...Ch. 2.5 - Finding Quartiles, Interquartile Range, and...Ch. 2.5 - Graphical Analysis In Exercises 13 and 14, use the...Ch. 2.5 - Graphical Analysis In Exercises 13 and 14, use the...Ch. 2.5 - Drawing a Box-and-Whisker Plot In Exercises 1518,...Ch. 2.5 - Drawing a Box-and-Whisker Plot In Exercises 1518,...Ch. 2.5 - Drawing a Box-and-Whisker Plot In Exercises 1518,...Ch. 2.5 - Drawing a Box-and-Whisker Plot In Exercises 1518,...Ch. 2.5 - Graphical Analysis In Exercises 1922, use the...Ch. 2.5 - Graphical Analysis In Exercises 1922, use the...Ch. 2.5 - Graphical Analysis In Exercises 1922, use the...Ch. 2.5 - Graphical Analysis In Exercises 1922, use the...Ch. 2.5 - Prob. 23E Ch. 2.5 - Using Technology to Find Quartiles and Draw Graphs...Ch. 2.5 - Using Technology to Find Quartiles and Draw Graphs...Ch. 2.5 - Using Technology to Find Quartiles and Draw Graphs...Ch. 2.5 - Studying Refer to the data set in Exercise 23 and...Ch. 2.5 - 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Finding z-Scores The distribution of the ages of...Ch. 2.5 - Finding z-Scores The distribution of the ages of...Ch. 2.5 - Finding z-Scores The distribution of the ages of...Ch. 2.5 - Prob. 48E Ch. 2.5 - Life Spans of Tires A brand of automobile tire has...Ch. 2.5 - Life Spans of Fruit Flies The life spans of a...Ch. 2.5 - Comparing z-Scores from Different Data Sets The...Ch. 2.5 - Comparing z-Scores from Different Data Sets The...Ch. 2.5 - Comparing z-Scores from Different Data Sets The...Ch. 2.5 - Comparing z-Scores from Different Data Sets The...Ch. 2.5 - Prob. 55E Ch. 2.5 - Prob. 56E Ch. 2.5 - Song Lengths Side-by-side box-and-whisker plots...Ch. 2.5 - Credit Card Purchases The credit card purchases...Ch. 2.5 - Modified Box-and-Whisker Plot In Exercises 5962,...Ch. 2.5 - Modified Box-and-Whisker Plot In Exercises 5962,...Ch. 2.5 - Modified Box-and-Whisker Plot In Exercises 5962,...Ch. 2.5 - Modified Box-and-Whisker Plot In Exercises 5962,...Ch. 2 - In Exercises 1 and 2, use the data set, which...Ch. 2 - In Exercises 1 and 2, use the data set, which...Ch. 2 - In Exercises 3 and 4, use the data set shown in...Ch. 2 - In Exercises 3 and 4, use the data set shown in...Ch. 2 - In Exercises 5 and 6, use the data set, which...Ch. 2 - In Exercises 5 and 6, use the data set, which...Ch. 2 - In Exercises 7 and 8, use the data set, which...Ch. 2 - In Exercises 7 and 8, use the data set, which...Ch. 2 - In Exercises 9 and 10, use the data set, which...Ch. 2 - In Exercises 9 and 10, use the data set, which...Ch. 2 - The heights (in feet) and the numbers of stories...Ch. 2 - The U.S. real unemployment rates over a 12-year...Ch. 2 - In Exercises 13 and 14, find the mean, the median,...Ch. 2 - In Exercises 13 and 14, find the mean, the median,...Ch. 2 - For the six test scores 78, 72, 86, 91, 87, and...Ch. 2 - For the four test scores 96, 85, 91, and 86, the...Ch. 2 - Estimate the mean of the frequency distribution...Ch. 2 - The frequency distribution shows the numbers of...Ch. 2 - Describe the shape of the distribution for the...Ch. 2 - Describe the shape of the distribution for the...Ch. 2 - In Exercises 21 and 22, determine whether the...Ch. 2 - In Exercises 21 and 22, determine whether the...Ch. 2 - For the histogram in Exercise 21, which is...Ch. 2 - Prob. 2.3.24RE Ch. 2 - In Exercises 25 and 26, find the range, mean,...Ch. 2 - In Exercises 25 and 26, find the range, mean,...Ch. 2 - In Exercises 27 and 28, find the range, mean,...Ch. 2 - In Exercises 27 and 28, find the range, mean,...Ch. 2 - The mean charge for electricity for a sample of...Ch. 2 - The mean charge for satellite television for a...Ch. 2 - The mean sale per customer for 40 customers at a...Ch. 2 - The mean duration of the 135 space shuttle flights...Ch. 2 - From a random sample of households, the numbers of...Ch. 2 - From a random sample of airplanes, the numbers of...Ch. 2 - In Exercises 35 and 36, find the coefficient of...Ch. 2 - In Exercises 35 and 36, find the coefficient of...Ch. 2 - In Exercises 3740, use the data set, which...Ch. 2 - In Exercises 3740, use the data set, which...Ch. 2 - In Exercises 3740, use the data set, which...Ch. 2 - In Exercises 3740, use the data set, which...Ch. 2 - Find the interquartile range of the data set from...Ch. 2 - The weights (in pounds) of the defensive players...Ch. 2 - A students test grade of 75 represents the 65th...Ch. 2 - As of December 2016, there were 721 adult...Ch. 2 - The towing capacities (in pounds) of all the...Ch. 2 - The towing capacities (in pounds) of all the...Ch. 2 - The towing capacities (in pounds) of all the...Ch. 2 - The towing capacities (in pounds) of all the...Ch. 2 - The data set represents the numbers of minutes a...Ch. 2 - Use frequency distribution formulas to approximate...Ch. 2 - Prob. 3CQ Ch. 2 - Prob. 4CQ Ch. 2 - The mean price of new homes from a sample of...Ch. 2 - Prob. 6CQ Ch. 2 - Prob. 7CQ Ch. 2 - The overall averages of 12 students in a...Ch. 2 - The data set represents the numbers of movies that...Ch. 2 - Use frequency distribution formulas to estimate...Ch. 2 - For the data set in Exercise 2, find the...Ch. 2 - The table lists the numbers of albums by The...Ch. 2 - The numbers of minutes it took 12 students in a...Ch. 2 - The data set represents the ages of 15 college...Ch. 2 - The mean gestational length of a sample of 208...Ch. 2 - How Would You Do It? (a) How would you investigate...Ch. 2 - Displaying the Data (a) What type of graph would...Ch. 2 - Measuring the Data (a) What other statistical...Ch. 2 - In Exercises 15, use technology. If possible,...Ch. 2 - In Exercises 15, use technology. If possible,...Ch. 2 - In Exercises 15, use technology. If possible,...Ch. 2 - In Exercises 15, use technology. If possible,...Ch. 2 - In Exercises 15, use technology. If possible,...Ch. 2 - What percent of the distribution lies within one...Ch. 2 - Do the results of Exercise 6 agree with the...Ch. 2 - Do the results of Exercise 6 agree with Chebychevs...Ch. 2 - Use the frequency distribution in Exercise 4 to...Ch. 2 - Prob. 10T Ch. 2 - In Exercices 1 and 2, identify the sampling...Ch. 2 - Prob. 2CR Ch. 2 - Prob. 3CR Ch. 2 - In Exercises 4 and 5, determine whether the number...Ch. 2 - In Exercises 4 and 5, determine whether the number...Ch. 2 - Prob. 6CR Ch. 2 - In Exercises 7 and 8, identify the population and...Ch. 2 - Prob. 8CR Ch. 2 - In Exercises 9 and 10, determine whether the study...Ch. 2 - Section 1.3 In Exercises 9 and 10, determine...Ch. 2 - Prob. 11CR Ch. 2 - Section 1.2 In Exercises 11 and 12, determine...Ch. 2 - The numbers of tornadoes by state in 2016 are...Ch. 2 - Prob. 14CR Ch. 2 - Tail lengths (in feet) for a sample of American...Ch. 2 - A study shows that life expectancies for Americans...Ch. 2 - In Exercises 1719, use the data set, which...Ch. 2 - In Exercises 1719, use the data set, which...Ch. 2 - In Exercises 1719, use the data set, which...

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