Question: A student advisory board consists of 20

> Find the first, second, and third quartiles for the points scored by the 51 winning teams using the data set listed on page 39. What do you observe? Class Frequency,S 14-19 5 20-25 12 26-31 13 32-37 11 38-43 5 44-49 3 50-55 2

> Change three of the 6’s in the data set to 4’s. How does this change affect the sample mean and sample standard deviation?

> Apply Chebychev’s Theorem to the data for Iowa using k = 2. What can you conclude? Is an age of 80 unusual for an Iowa resident? Explain.

> Estimate the percent of women ages 20 –29 whose heights are between 64.2 inches and 67.1 inches. Heights of Women in the U.S. Ages 20-29 34.13% 13.59% 555 84 613 642 621 20.0 729 1-2 I+2 Height (in inches)

> Write a data set that has 10 entries, a mean of 10, and a population standard deviation that is approximately 3. (There are many correct answers.)

> Sample office rental rates (in dollars per square foot per year) for Dallas are listed. Use technology to find the mean rental rate and the sample standard deviation. 18 27 21 14 20 20 24 11 16 7 12 22 10 15 21 34 23 13 38 16 18 30 15 30

> Refer to the study in Example 3. The recovery times (in days) for Group 2 are listed below. Find the sample variance and standard deviation of the recovery times. 43 57 18 45 47 33 49 24

> Find the population variance and standard deviation of the starting salaries for Corporation B in Example 1.

> Find the range of the starting salaries for Corporation B. Compare the result to the one in Example 1.

> Organize the data using the indicated type of graph. Describe any patterns. The average owning and operating costs for four types of vehicles in the United States in 2016 include small sedans ($6579), medium sedans ($8604), SUVs ($10,255), and minivans (

> For each data set, determine whether the data are at the interval level or at the ratio level. Explain your reasoning. 1. The body temperatures (in degrees Fahrenheit) of an athlete during an exercise session 2. The heart rates (in beats per minute) of

> Use a frequency distribution to estimate the mean of the points scored by the 51 winning teams listed on page 39. Using the population mean formula from page 67 with the original data set, the mean is about 30.2 points. Compare this with the estimated me

> In Example 7, your grade in the two-credit course is changed to a B. What is your new weighted mean?

> Remove the data entry 65 from the data set in Example 6. Then rework the example. How does the absence of this outlier change each of the measures?

> In a survey, 1534 adults were asked, “How much do you, personally, care about the issue of global climate change?” Of those surveyed, 550 said “a great deal,” 578 said “some,” 274 said “not too much,” 119 said “not at all,” and 13 did not provide an answ

> Find the mode of the points scored by the 51 winning teams listed on page 39. Class Frequency,S 14-19 5 20-25 12 26-31 13 32-37 11 38-43 5 44-49 3 50-55 2

> The points scored by the winning teams in the Super Bowls for the National Football League’s 2001 through 2016 seasons are listed. Find the median. 20 48 32 24 21 29 17 27 31 31 21 34 43 28 24 34

> Find the median of the points scored by the 51 winning teams listed on page 39. Class Frequency,S 14-19 5 20-25 12 26-31 13 32-37 11 38-43 5 44-49 3 50-55 2

> In a survey of 1501 ninth to twelfth graders in the United States, 1215 said “leaders today are more concerned with their own agenda than with achieving the overall goals of the organization they serve.” Identify the population and the sample. Describe t

> Find the mean of the points scored by the 51 winning teams listed on page 39. Class Frequency,S 14-19 5 20-25 12 26-31 13 32-37 11 38-43 5 44-49 3 50-55 2

> Organize the data using the indicated type of graph. Describe any patterns. The medal counts for five countries at the 2016 Summer Olympics include Germany (42 medals), Great Britain (67 medals), the United States (121 medals), Russia (56 medals), and Ch

> For each data set, determine whether the data are at the nominal level or at the ordinal level. Explain your reasoning. 1. The final standings for the Pacific Division of the National Basketball Association 2. A collection of phone numbers

> Use the table in Example 7 to construct a time series chart for the number of burglaries for the years 2005 through 2015. Describe any trends. From Example 7: Motor vehicle thefts (in millions) Burglaries (in millions) Year 2005 1.24 2.16 2006 1.20

> The lengths of employment and the salaries of 10 employees are listed in the table below. Graph the data using a scatter plot. Describe any trends. You will learn more about scatter plots and how to analyze them in Chapter 9. Length of e

> Every year, the Better Business Bureau (BBB) receives complaints from customers. Here are some complaints the BBB received in a recent year. 16,281 complaints about auto dealers (used cars) 8384 complaints about insurance companies 3634 complaints abo

> The numbers of earned degrees conferred (in thousands) in 1990 are shown in the table. Use a pie chart to organize the data. Compare the 1990 data with the 2014 data. You can use technology to construct a pie chart. For instance, an Excel pie chart for

> Use a dot plot to organize the points scored by the 51 winning teams listed on page 39. Describe any patterns. Class Frequency,S 14-19 5 20-25 12 26-31 13 32-37 11 38-43 5 44-49 3 50-55 2

> Using two rows for each stem, revise the stem-and-leaf plot you constructed in Try It Yourself 1. Describe any patterns. From Try It Yourself 1: 14 6 6 6 7 2 00 0 1 1 1 3 3 4 4 4 4 6 77777 8 9 3 0 1 1 1 1 22 3 4 4 4 4 5 55 7 8 8 9 Key: 1|4 = 14 4 2

> Use a stem-and-leaf plot to organize the points scored by the 51 winning teams listed on page 39. Describe any patterns. Class Frequency,S 14-19 5 20-25 12 26-31 13 32-37 11 38-43 5 44-49 3 50-55 2

> Use technology and the frequency distribution from Try It Yourself 2 to construct a frequency histogram that represents the points scored by the 51 winning teams listed on page 39. From Try It Yourself 2: Class 14-20 Frequency, f 21-27 2

> Use the frequency distribution from Try It Yourself 2 to construct an ogive that represents the points scored by the 51 winning teams listed on page 39. From Try It Yourself 2: Class 14-20 Frequency, f 21-27 28-34 35-41 42-48 49-55 15 14 7 4 3

> Organize the data using the indicated type of graph. Describe any patterns. Use a pie chart to display the data, which represent the number of men’s New York City Marathon winners from each country through 2016. United States 15 Tan

> Use the frequency distribution in Try It Yourself 2 to construct a relative frequency histogram that represents the points scored by the 51 winning teams listed on page 39. From Try It Yourself 2: Class 14-20 Frequency, f 21-27 28-34 35-41 42-48 49-

> Use the frequency distribution from Try It Yourself 2 to construct a frequency polygon that represents the points scored by the 51 winning teams listed on page 39. Describe any patterns. From Try It Yourself 2: Class 14-20 Frequency, f 2

> Use the frequency distribution from Try It Yourself 2 to construct a frequency histogram that represents the points scored by the 51 winning teams listed on page 39. Describe any patterns. From Try It Yourself 2: Class 14-20 Frequency, f 21-27 28-34

> Using the frequency distribution constructed in Try It Yourself 1, find the midpoint, relative frequency, and cumulative frequency of each class. Describe any patterns. From Try It Yourself 1: Class 14-20 Frequency, f 21-27 28-34 35-41 42-48 49-55 1

> Construct a frequency distribution using the points scored by the 51 winning teams listed on page 39. Use six classes. Class Frequency,S 14-19 5 20-25 12 26-31 13 32-37 11 38-43 5 44-49 3 50-55 2

> The populations of several U.S. cities are shown in the table. Which data are qualitative data and which are quantitative data? Explain your reasoning. City Population Baltimore, MD 621,849 Chicago, IL 2,720,546 Glendale, AZ 240,126 Miami, FL 441,00

> A study of 1000 U.S. adults found that when they have a question about their medication, three out of four adults will consult with their physician or pharmacist and only 8% visit a medication-specific website. a. Identify the population and the sample.

> Determine whether each number describes a population parameter or a sample statistic. Explain your reasoning. a. Last year, a small company spent a total of $5,150,694 on employees’ salaries. b. In the United States, a survey of a few thousand adults wi

> You want to determine the opinions of students regarding stem cell research. Identify the sampling technique you are using when you select these samples. 1. You select a class at random and question each student in the class. 2. You assign each student

> A company employs 79 people. Choose a simple random sample of five to survey.

> Organize the data using the indicated type of graph. Describe any patterns. Use a pie chart to display the data, which represent the numbers of student loan borrowers (in millions) by balance owed in the fourth quarter of 2015. $1 to $10,000 16.7 $10

> The company in Example 2 identifies 240 adults who are heavy smokers. The subjects are randomly assigned to be in a gum treatment group or in a control group. Each subject is also given a DVD featuring the dangers of smoking. After four months, most of t

> Your college identification number consists of nine digits. The first two digits of the number will be the last two digits of the year you are scheduled to graduate. The other digits can be any number from 0 through 9, and each digit can be repeated. Wha

> Find the probability of tossing a tail and spinning a number less than 6.

> Use the frequency distribution in Example 7 to find the probability of randomly selecting a user who is not 18 to 22 years old. From Example 7: Ages Frequency, / 18 to 22 156 23 to 35 312 36 to 49 254 50 to 64 195 65 and over 58 Ef = 975

> A jury consists of five men and seven women. Three jury members are selected at random for an interview. Find the probability that all three are men.

> Find the probability of being dealt 5 diamonds from a standard deck of playing cards that also includes two jokers. In this case, the joker is considered to be a wild card that can be used to represent any card in the deck.

> The manager of an accounting department wants to form a three-person advisory committee from the 20 employees in the department. In how many ways can the manager form this committee?

> The contractor wants to plant six oak trees, nine maple trees, and five poplar trees along the subdivision street. The trees are to be spaced evenly. In how many distinguishable ways can they be planted?

> The board of directors of a company has 12 members. One member is the president, another is the vice president, another is the secretary, and another is the treasurer. How many ways can these positions be assigned?

> Organize the data using the indicated type of graph. Describe any patterns. Use a dot plot to display the data, which represent the life spans (in days) of 30 houseflies. 9 9 4 11 10 5 13 9 7 11 6 8 14 10 6 8 6 13 10 14 14 10 10 7 14 11 7 8 13 10

> The Big 12 is a collegiate athletic conference with 10 schools: Baylor, Iowa State, Kansas, Kansas State, Oklahoma, Oklahoma State, TCU, Texas, Texas Tech, and West Virginia. How many different final standings are possible for the Big 12’s football teams

> Can any of the events in Exercises 49–52 be considered unusual? Explain.

> Use the bar graph at the left, which shows the highest level of education received by employees of a company. Find the probability that the highest level of education for an employee chosen at random is a high school diploma. Level of Education 34 2

> Use the bar graph at the left, which shows the highest level of education received by employees of a company. Find the probability that the highest level of education for an employee chosen at random is a master’s degree. Level of

> Use the bar graph at the left, which shows the highest level of education received by employees of a company. Find the probability that the highest level of education for an employee chosen at random is an associate’s degree. Level

> Use the bar graph at the left, which shows the highest level of education received by employees of a company. Find the probability that the highest level of education for an employee chosen at random is a doctorate. Level of Education 34 25 23 Highe

> What is the probability that a registered voter in Texas chosen at random did not vote in the 2016 presidential election? All Registered Voters in Texas About About 9.0 million 6.1 million did voted in the 2016) not vote in the presidential /2016 pro

> What is the probability that a voter from Virginia chosen at random voted Republican in the 2016 presidential election? 2016 Presidential Election Voters from Virginia About About 2.2 million 1.8 million voted voted for Republican another party

> You are planning a three-day trip to Seattle, Washington, in October. Use the fact that on each day, it could either be sunny or rainy. What is the probability that it rains on at least one day?

> You are planning a three-day trip to Seattle, Washington, in October. Use the fact that on each day, it could either be sunny or rainy. What is the probability that it rains on exactly one day?

> Organize the data using the indicated type of graph. Describe any patterns. Use a dot plot to display the data, which represent the systolic blood pressures (in millimeters of mercury) of 24 patients at a doctor’s office.

> You are planning a three-day trip to Seattle, Washington, in October. Use the fact that on each day, it could either be sunny or rainy. What is the probability that it rains all three days?

> You are planning a three-day trip to Seattle, Washington, in October. Use the fact that on each day, it could either be sunny or rainy. What is the probability that it is sunny all three days?

> An access code consists of six characters. For each character, any letter or number can be used, with the exceptions that the first character cannot be 0 and the last two characters must be odd numbers. a. What is the probability of randomly selecting t

> An access code consists of three digits. Each digit can be any number from 0 through 9, and each digit can be repeated. a. What is the probability of randomly selecting the correct access code on the first try? b. What is the probability of not selecti

> A probability experiment consists of rolling a six-sided die and spinning the spinner shown at the left. The spinner is equally likely to land on each color. Use a tree diagram to find the probability of the event. Then explain whether the event can be c

> A probability experiment consists of rolling a six-sided die and spinning the spinner shown at the left. The spinner is equally likely to land on each color. Use a tree diagram to find the probability of the event. Then explain whether the event can be c

> A probability experiment consists of rolling a six-sided die and spinning the spinner shown at the left. The spinner is equally likely to land on each color. Use a tree diagram to find the probability of the event. Then explain whether the event can be c

> A probability experiment consists of rolling a six-sided die and spinning the spinner shown at the left. The spinner is equally likely to land on each color. Use a tree diagram to find the probability of the event. Then explain whether the event can be c

> You are dealt a hand of five cards from a standard deck of 52 playing cards. Find the probability of being dealt three of a kind (the other two cards are different from each other).

> You are dealt a hand of five cards from a standard deck of 52 playing cards. Find the probability of being dealt a full house (three of one kind and two of another kind).

> Organize the data using the indicated type of graph. Describe any patterns. Use a stem-and-leaf plot that has two rows for each stem to display the data, which represent the numbers of electoral votes for each of the 50 states. 3 11 6 55 4 20 11 3 29

> You are dealt a hand of five cards from a standard deck of 52 playing cards. Find the probability of being dealt four of a kind.

> You are dealt a hand of five cards from a standard deck of 52 playing cards. Find the probability of being dealt two clubs and one of each of the other three suits.

> In Exercise 57, what is the probability that the four sales representatives chosen to participate in the training program will be from only three of the four regions?

> Four sales representatives for a company are to be chosen at random to participate in a training program. The company has eight sales representatives, two in each of four regions. What is the probability that the four sales representatives chosen to part

> A pack of 100 recordable DVDs contains 5 defective disks. You select four disks. What is the probability of selecting at least three nondefective disks?

> A shipment of 10 microwave ovens contains 2 defective units. A restaurant buys three units. What is the probability of the restaurant buying at least two nondefective units?

> A warehouse employs 24 workers on first shift, 17 workers on second shift, and 13 workers on third shift. Eight workers are chosen at random to be interviewed about the work environment. Find the probability of choosing two second-shift workers and two t

> A warehouse employs 24 workers on first shift, 17 workers on second shift, and 13 workers on third shift. Eight workers are chosen at random to be interviewed about the work environment. Find the probability of choosing four third-shift workers.

> A warehouse employs 24 workers on first shift, 17 workers on second shift, and 13 workers on third shift. Eight workers are chosen at random to be interviewed about the work environment. Find the probability of choosing three second-shift workers.

> A warehouse employs 24 workers on first shift, 17 workers on second shift, and 13 workers on third shift. Eight workers are chosen at random to be interviewed about the work environment. Find the probability of choosing five first-shift workers.

> Organize the data using the indicated type of graph. Describe any patterns. Use a stem-and-leaf plot that has two rows for each stem to display the data, which represent the incomes (in millions) of the top 30 highest-paid athletes. 37 36 44 50 35 56

> Why should the number of classes in a frequency distribution be between 5 and 20?

> A company that has 200 employees chooses a committee of 5 to represent employee retirement issues. When the committee is formed, none of the 56 minority employees are selected. a. Use technology to find the number of ways 5 employees can be chosen from

> In a state lottery, you must correctly select 5 numbers (in any order) out of 40 to win the top prize. You purchase one lottery ticket. What is the probability that you will win the top prize?

> Use the pie chart, which shows the results of a survey of 1500 U.S. adults who were asked how many of their closest family and friends have food allergies or intolerances. You choose 4 adults at random. What is the probability that none of the four say

> Use the pie chart, which shows the results of a survey of 1500 U.S. adults who were asked how many of their closest family and friends have food allergies or intolerances. You choose 6 adults at random. What is the probability that none of the six say s

> Use the pie chart, which shows the results of a survey of 1500 U.S. adults who were asked how many of their closest family and friends have food allergies or intolerances. You choose 3 adults at random. What is the probability that all three say none of

> Use the pie chart, which shows the results of a survey of 1500 U.S. adults who were asked how many of their closest family and friends have food allergies or intolerances. You choose 2 adults at random. What is the probability that both say most of thei

> The offices of president, vice president, secretary, and treasurer for an environmental club will be filled from a pool of 14 candidates. Six of the candidates are members of the debate team. a. What is the probability that all of the offices are filled

> You look over the songs on a jukebox and determine that you like 15 of the 56 songs. a. What is the probability that you like the next three songs that are played? (Assume a song cannot be repeated.) b. What is the probability that you do not like the

> A pizza shop offers nine toppings. No topping is used more than once. What is the probability that the toppings on a three-topping pizza are pepperoni, onions, and mushrooms?

> A horse race has 12 entries. Assuming that there are no ties, what is the probability that the three horses owned by one person finish first, second, and third?

> Organize the data using the indicated type of graph. Describe any patterns. Use a stem-and-leaf plot to display the data shown in the table at the left, which represent the monthly average prices (in dollars per pound) charged by 30 retail outlets for fr

> The University of California Health Services committee has five members. Two members are chosen to serve as the committee chair and vice chair. Each committee member is equally likely to serve in either of these positions. What is the probability of rand

> The U.S. Senate Committee on Homeland Security and Governmental Affairs has 15 members. Two members are chosen to serve as the committee chair and the ranking member. Each committee member is equally likely to serve in either of these positions. What is