After constructing an expanded frequency distribution, what should the sum of the relative frequencies be? Explain.
> Identify the two events described in the study. Do the results indicate that the events are independent or dependent? Explain your reasoning. A study found that people who suffer from obstructive sleep apnea are at increased risk of having heart disease.
> Determine whether the events are independent or dependent. Explain your reasoning. A ball is selected from a bin of balls numbered from 1 through 52. It is replaced, and then a second numbered ball is selected from the bin.
> Determine whether the events are independent or dependent. Explain your reasoning. Rolling a six-sided die and then rolling the die a second time so that the sum of the two rolls is five
> Determine whether the events are independent or dependent. Explain your reasoning. Not putting money in a parking meter and getting a parking ticket
> Determine whether the events are independent or dependent. Explain your reasoning. Returning a rented movie after the due date and receiving a late fee
> Determine whether the statement is true or false. If it is false, rewrite it as a true statement. An ogive is a graph that displays relative frequencies.
> Determine whether the events are independent or dependent. Explain your reasoning. A father having hazel eyes and a daughter having hazel eyes
> What is the difference between independent and dependent events?
> Determine whether the statement is true or false. If it is false, rewrite it as a true statement. A probability of 1/10 indicates an unusual event.
> Determine whether the statement is true or false. If it is false, rewrite it as a true statement. You toss a fair coin nine times and it lands tails up each time. The probability it will land heads up on the tenth toss is greater than 0.5.
> Determine whether the statement is true or false. If it is false, rewrite it as a true statement. You are taking a test that has true or false and multiple choice questions. The event “choosing false on a true or false question and choosing A or B on a m
> List the three formulas that can be used to describe complementary events.
> Describe the law of large numbers in your own words. Give an example.
> A probability experiment consists of rolling a 12-sided die, numbered 1 to 12. Find the probability of the event. Event B: rolling a 10
> A probability experiment consists of rolling a 12-sided die, numbered 1 to 12. Find the probability of the event. Event A: rolling a 2
> Use the Fundamental Counting Principle. Assuming that no questions are left unanswered, in how many ways can a six-question true or false quiz be answered?
> Determine whether the statement is true or false. If it is false, rewrite it as a true statement. The midpoint of a class is the sum of its lower and upper limits divided by two.
> When you use the Fundamental Counting Principle, what are you counting?
> Use the Fundamental Counting Principle. A realtor uses a lock box to store the keys to a house that is for sale. The access code for the lock box consists of four digits. The first digit cannot be zero and the last digit must be even. How many different
> Use the Fundamental Counting Principle. A tablet has 4 choices for an operating system, 3 choices for a screen size, 4 choices for a processor, 6 choices for memory size, and 3 choices for a battery. How many ways can you customize the tablet?
> Use the Fundamental Counting Principle. A restaurant offers a $15 dinner special that lets you choose from 6 appetizers, 12 entrées, and 8 desserts. How many different meals are available when you select an appetizer, an entrée, and a dessert?
> Determine the number of outcomes in the event. Then decide whether the event is a simple event or not. Explain your reasoning. You randomly select one card from a standard deck of 52 playing cards. Event B is selecting the ace of spades.
> Determine the number of outcomes in the event. Then decide whether the event is a simple event or not. Explain your reasoning. You randomly select one card from a standard deck of 52 playing cards. Event A is selecting a diamond.
> Determine the number of outcomes in the event. Then decide whether the event is a simple event or not. Explain your reasoning. A spreadsheet is used to randomly generate a number from 1 to 4000. Event B is generating a number less than 500.
> Determine the number of outcomes in the event. Then decide whether the event is a simple event or not. Explain your reasoning. A spreadsheet is used to randomly generate a number from 1 to 2000. Event A is generating the number 253.
> Identify the sample space of the probability experiment and determine the number of outcomes in the sample space. Draw a tree diagram when appropriate. Rolling a six-sided die, tossing two coins, and then drawing one card from a hand of three cards
> Identify the sample space of the probability experiment and determine the number of outcomes in the sample space. Draw a tree diagram when appropriate. Rolling a pair of six-sided dice
> Determine whether the statement is true or false. If it is false, rewrite it as a true statement. In a frequency distribution, the class width is the distance between the lower and upper limits of a class.
> Identify the sample space of the probability experiment and determine the number of outcomes in the sample space. Draw a tree diagram when appropriate. Tossing three coins
> Explain why the statement is incorrect: The probability of rain is 150%.
> Identify the sample space of the probability experiment and determine the number of outcomes in the sample space. Draw a tree diagram when appropriate. Tossing two coins
> Identify the sample space of the probability experiment and determine the number of outcomes in the sample space. Draw a tree diagram when appropriate. Identifying a person’s eye color (blue, brown, green, hazel, gray, other) and hair color (blonde, blac
> Identify the sample space of the probability experiment and determine the number of outcomes in the sample space. Draw a tree diagram when appropriate. Drawing one card from a standard deck of cards
> Identify the sample space of the probability experiment and determine the number of outcomes in the sample space. Draw a tree diagram when appropriate. Guessing a student’s letter grade (A, B, C, D, F) in a class
> Identify the sample space of the probability experiment and determine the number of outcomes in the sample space. Draw a tree diagram when appropriate. Guessing the initial of a student’s middle name
> The probability that an event will not happen is given. Find the probability that the event will happen. P(E′) = 21/61
> The probability that an event will not happen is given. Find the probability that the event will happen. P(E′) = 3/4
> The probability that an event will not happen is given. Find the probability that the event will happen. P(E′) = 0.13
> What is the difference between a frequency polygon and an ogive?
> The probability that an event will not happen is given. Find the probability that the event will happen. P(E′) = 0.95
> The probability that an event will happen is given. Find the probability that the event will not happen. P(E) = 2/7
> Determine whether each number could represent the probability of an event. Explain your reasoning. a. 25/25 b. 333.3% c. 2.3 d. -0.0004 e. 0 f. 320/105
> The probability that an event will happen is given. Find the probability that the event will not happen. P(E) = 0.03
> The probability that an event will happen is given. Find the probability that the event will not happen. P(E) = 0.55
> The probability that an event will happen is given. Find the probability that the event will not happen. P(E) = 19/23
> Match the event with its probability. a. 0.95 b. 0.005 c. 0.25 d. 0 e. 0.375 f. 0.5 You toss a coin four times. What is the probability of tossing tails exactly half of the time?
> Match the event with its probability. a. 0.95 b. 0.005 c. 0.25 d. 0 e. 0.375 f. 0.5 Five of the 100 digital video recorders (DVRs) in an inventory are known to be defective. What is the probability you randomly select a DVR that is not
> Match the event with its probability. a. 0.95 b. 0.005 c. 0.25 d. 0 e. 0.375 f. 0.5 A game show contestant must randomly select a door. One door doubles her money while the other three doors leave her with no winnings. What is the prob
> Match the event with its probability. a. 0.95 b. 0.005 c. 0.25 d. 0 e. 0.375 f. 0.5 You randomly select a number from 0 to 9 and then randomly select a number from 0 to 19. What is the probability of selecting a 3 both times?
> Match the event with its probability. a. 0.95 b. 0.005 c. 0.25 d. 0 e. 0.375 f. 0.5 A random number generator is used to select a number from 1 to 100. What is the probability of selecting an even number?
> Match the event with its probability. a. 0.95 b. 0.005 c. 0.25 d. 0 e. 0.375 f. 0.5 A random number generator is used to select a number from 1 to 100. What is the probability of selecting the number 153?
> Determine whether the statement is true or false. If it is false, rewrite it as a true statement. When an event is almost certain to happen, its complement will be an unusual event.
> What is the difference between an outcome and an event?
> The items below appear on an employment application. Determine the level of measurement of the data for each category. a. Highest grade level completed b. Gender c. Year of college graduation d. Number of years at last job
> The items below appear on a physician’s intake form. Determine the level of measurement of the data for each category. a. Temperature b. Allergies c. Weight d. Pain level (scale of 0 to 10)
> Determine the level of measurement of the data listed on the horizontal and vertical axes in the figure. Motor Vehicle Fatalities by Year 36 35 34 33 32- 2011 2012 2013 2014 2015 Year Number (in thousands)
> Determine the level of measurement of the data listed on the horizontal and vertical axes in the figure. Gender Profile of the 114th Congress 500 400 300 ż 200 100 Women Men Gender Number
> Determine the level of measurement of the data listed on the horizontal and vertical axes in the figure. How Many Vacations Are You Planning to Take This Summer? 50 40 30 20 10- 1-2 34 Sor mote Number of vacations Percent
> Determine the level of measurement of the data listed on the horizontal and vertical axes in the figure. What is the Format of the Books You Read? 40 35 30 25 20 15 10 Response Print only - only Both print and digital Do not read books
> Use the data set and the indicated number of classes to construct a. an expanded frequency distribution, b. a frequency histogram, c. a frequency polygon, d. a relative frequency histogram, and e. an ogive. Pu
> Determine the level of measurement of the data set. Explain your reasoning. The times of the day when a person checks his or her cell phone are listed. 8:28 A.M. 11:25 A.M. 2:26 P.M. 5:28 P.M. 9:30 A.M. 11:46 A.M. 2:49 P.M. 5:57 P.M. 9:43 A.M. 12:27
> Determine whether the statement is true or false. If it is false, rewrite it as a true statement. An outlier is any number above Q3 or below Q1.
> Name each level of measurement for which data can be quantitative.
> Determine the level of measurement of the data set. Explain your reasoning. The top ten fiction books on The New York Times Best Sellers List on October 9, 2016, are listed. 1. The Girl on the Train 2. Home 3. The Kept Woman 4. Magic Binds 5. Common
> Determine the level of measurement of the data set. Explain your reasoning. The top ten business schools in the United States for a recent year according to Forbes are listed. 1. Stanford 2. Harvard 3. Northwestern (Kellogg) 4. Columbia 5. Dartmouth
> Determine the level of measurement of the data set. Explain your reasoning. The years that a television show on ABC won the Emmy for best comedy series are listed. 1982 2014 1981 1955 2010 1979 1980 1988 2011 2012 2013
> Determine whether the data are qualitative or quantitative. Explain your reasoning. Wait times at a the Department of Motor Vehicles
> Determine whether the data are qualitative or quantitative. Explain your reasoning. Responses on an opinion poll
> Determine whether the data are qualitative or quantitative. Explain your reasoning. Species of mammals in a rain forest
> Determine whether the data are qualitative or quantitative. Explain your reasoning. Heights of infants in a maternity ward
> Construct a cumulative frequency distribution and an ogive for the data set using six classes. Then describe the location of the greatest increase in frequency. Saturated Fat Intakes Data set: Daily saturated fat intakes (in grams) of 28 people 18 12
> Use the frequency distribution in Exercise 16 to construct an expanded frequency distribution, as shown in Example 2. From Exercise 16: Toledo, OH, Average Normal Temperatures (°F) Class Frequency, S 25-32 86 33-40 39 41-48 41 49-56 48 57-64 43 65-
> Determine whether the data are qualitative or quantitative. Explain your reasoning. Student ID numbers
> Name each level of measurement for which data can be qualitative.
> Determine whether the statement is true or false. If it is false, rewrite it as a true statement. The second quartile is the mean of an ordered data set.
> Determine whether the statement is true or false. If it is false, rewrite it as a true statement. A population is the collection of some outcomes, responses, measurements, or counts that are of interest.
> Determine whether the statement is true or false. If it is false, rewrite it as a true statement. Inferential statistics involves using a population to draw a conclusion about a corresponding sample.
> Determine whether the statement is true or false. If it is false, rewrite it as a true statement. It is impossible to obtain all the census data about the U.S. population.
> Determine whether the statement is true or false. If it is false, rewrite it as a true statement. A sample is a subset of a population.
> Determine whether the statement is true or false. If it is false, rewrite it as a true statement. A statistic is a numerical description of a population characteristic.
> What are the two main branches of statistics?
> Identify the population and the sample. Describe the sample data set. A survey of 1254 preowned automobile shoppers found that 5% bought extended warranties.
> Construct a cumulative frequency distribution and an ogive for the data set using six classes. Then describe the location of the greatest increase in frequency. Retirement Ages Data set: Retirement ages of 35 English professors 72 62 55 61 53 62 65 6
> Identify the population and the sample. Describe the sample data set. A survey of 1029 U.S. adults found that 23% of those suffering with chronic pain had been diagnosed with a sleep disorder.
> Identify the population and the sample. Describe the sample data set. A survey of 496 students at a high school found that 95% planned on going to college.
> What is the difference between a parameter and a statistic?
> Determine whether the statement is true or false. If it is false, rewrite it as a true statement. About one-quarter of a data set falls below Q1.
> Identify the population and the sample. Describe the sample data set. A survey of 159 U.S. law firms found that the average hourly billing rate for partners was $604.
> Identify the population and the sample. Describe the sample data set. A survey of 1100 travelers worldwide found that 53% of respondents with pets travel with their pets.
> Identify the population and the sample. Describe the sample data set. A survey of 3301 U.S. adults found that 39% received an influenza vaccine for a recent flu season.
> To find the 10% trimmed mean of a data set, order the data, delete the lowest 10% of the entries and the highest 10% of the entries, and find the mean of the remaining entries. a. Find the 10% trimmed mean for the data in Exercise 65. b. Compare the fo
> Students in an experimental psychology class did research on depression as a sign of stress. A test was administered to a sample of 30 students. The scores are shown in the table at the left. a. Find the mean and the median of the data. b. Draw a stem-
> Another measure of central tendency, which is rarely used, is the midrange. It can be found by using the formula Which of the manufacturers in Exercise 63 would prefer to use the midrange statistic in their ads? Explain your reasoning. (Maximum data
> Construct a frequency distribution and a relative frequency histogram for the data set using five classes. Which class has the greatest relative frequency and which has the least relative frequency? Triglyceride Levels Data set: Triglyceride levels (
> A consumer testing service obtained the gas mileages (in miles per gallon) shown in the table at the left in five test runs performed with three types of compact cars. a. The manufacturer of Car A wants to advertise that its car performed best in this t
> a. identify any outliers and b. draw a modified box-and-whisker plot that represents the data set. Use asterisks (*) to identify outliers. 36 38 47 50 53 54 19 27 30 47 48 50 56 60 90 62
> a. identify any outliers and b. draw a modified box-and-whisker plot that represents the data set. Use asterisks (*) to identify outliers. 47 29 59 83 46 1 46 23 52 53 35 37 49
> a. identify any outliers and b. draw a modified box-and-whisker plot that represents the data set. Use asterisks (*) to identify outliers. 75 78 80 75 62 72 74 75 80 95 76 72
> Describe the relationship between quartiles and percentiles.
> a. identify any outliers and b. draw a modified box-and-whisker plot that represents the data set. Use asterisks (*) to identify outliers. 16 9 11 12 8 10 12 13 11 10 24 9 2 15 7 8 10
