Complete Test Bank Fundamentals of Statistics 5th Edition Sullivan Questions & Answers with rationales (Chapter 1-13)

1 Fundamentals of Statistics 5th Edition Sullivan Test Bank SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. Provide an appropriate response. 1) What is statistics? Answer: Statistics is the science of collecting, summarizing, organizing, and analyzing information in order to answer questions or draw conclusions. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 2) Which of the following is not true of statistics? A) Statistics involves collecting and summarizing data. B) Statistics is used to answer questions with 100% certainty. C) Statistics can be used to organize and analyze information. D) Statistics is used to draw conclusions using data. Answer: B Determine whether the underlined value is a parameter or a statistic. 3) In a survey conducted in the town of Atherton, 29% of adult respondents reported that they had been involved in at least one car accident in the past ten years. A) parameter B) statistic Answer: B 4) 25.2% of the mayors of cities in a certain state are from minority groups. A) parameter B) statistic Answer: A 5) A study of 3100 college students in the city of Pemblington found that 4% had been victims of violent crimes. A) parameter B) statistic Answer: B 6) 51.3% of the residents of Idlington Garden City are female. A) statistic B) parameter Answer: B 7) Telephone interviews of 318 employees of a large electronics company found that 45% were dissatisfied with their working conditions. A) statistic B) parameter Answer: A 8) The average age of the 65 students in Ms. Hope's political science class is 21 years 6 months. A) parameter B) statistic Answer: A 9) Mark retired from competitive athletics last year. In his career as a sprinter he had competed in the 100-meters event a total of 328 times. His average time for these 328 races was 10.23 seconds. 2 A) parameter B) statistic Answer: A SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. Provide an appropriate response. 10) A survey of 1144 American households found that 91% of the households own a DVD recorder. Identify the population, the sample, and the individuals in the study. Answer: population: collection of all American households; sample: collection of 1144 American households surveyed; individuals: each household 11) A survey of 1365 American households found that 64% of the households own at least two bicycles. Identify the population, the sample, and the individuals in the study. Answer: population: collection of all American households; sample: collection of 1365 American households surveyed; individuals: each household MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 12) Parking at a large university has become a very big problem. University administrators are interested in determining the average parking time (e.g. the time it takes a student to find a parking spot) of its students. An administrator inconspicuously followed 300 students and carefully recorded their parking times. Identify the population of interest to the university administration. A) the students that park at the university between 9 and 10 AM on Wednesdays B) the parking times of the 300 students from whom the data were collected C) the entire set of faculty, staff, and students that park at the university D) the parking times of the entire set of students that park at the university Answer: D 13) A manufacturer of cellular phones has decided that an assembly line is operating satisfactorily if less than 0.03% of the phones produced per day are defective. To check the quality of a day's production, the company decides to randomly sample 10 phones from a day's production to test for defects. Define the population of interest to the manufacturer. A) the 10 phones sampled and tested B) the 0.03% of the phones that are defective C) all the phones produced during the day in question D) the 10 responses: defective or not defective Answer: C 14) A recent study attempted to estimate the proportion of Florida residents who were willing to spend more tax dollars on protecting the Florida beaches from environmental disasters. Thirty -one hundred Florida residents were surveyed. Which of the following is the population used in the study? A) the Florida residents who were willing to spend more tax dollars on protecting the beaches from environmental disasters B) all Florida residents who lived along the beaches C) the 3100 Florida residents surveyed D) all Florida residents Answer: D 15) Parking at a large university has become a very big problem. University administrators are interested in determining the average parking time (e.g. the time it takes a student to find a parking spot) of its students. An administrator inconspicuously followed 210 students and carefully recorded their parking times. Identify the sample of interest to the university administration. A) parking time of a student B) parking times of the 210 students C) location of the parking spot D) type of car (import or domestic) 3 Answer: B 16) The legal profession conducted a study to determine the percentage of cardiologists who had been sued for malpractice in the last three years. The sample was randomly chosen from a national directory of doctors. Identify the individuals in the study. A) the responses: have been sued/have not been sued for malpractice in the last three years B) the doctor's area of expertise (i.e., cardiology, pediatrics, etc.) C) all cardiologists in the directory D) each cardiologist selected from the directory Answer: D SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. 17) Administrators at a large university want to know the average debt incurred by their graduates. Surveys were mailed to 170 graduating seniors asking them to report their total student loan debt. Identify the population, sample, and individuals in the study. Answer: The population of interest is the student loan debt incurred by all graduates of the university. The sample is student loan debt of the 170 graduating seniors that were collected by the university administrators. The individuals are each graduating senior whose student loan debt was recorded. 18) A study was conducted to determine if listening to heavy metal music affects critical thinking. To test the claim, 140 subjects were randomly assigned to two groups. Both groups were administered a basic math skills exam. The first group took the exam while heavy metal music was piped into the exam room, while the second group took the exam in a silent room. The mean exam score for the first group was 78, and the mean exam score for the second group was 89. The researchers concluded that heavy metal music negatively affects critical thinking. Identify (a) the research objective, (b) the sample, (c) the descriptive statistics, and (d) the conclusions made in the study. Answer: (a) if listening to heavy metal music affects critical thinking (b) the 140 subjects (c) the mean exam score for the first group = 78, and the mean exam score for the second group was 89 (d) that heavy metal music negatively affects critical thinking 19) A telephone poll asked 1391 registered voters "Would you vote for the current vice president if he ran for president?" Of these 1391 respondents, 36% would vote for the current vice president if he ran for president. The administrators of the study concluded that 36% of all registered voters would vote for the current vice president if he ran for president. Identify (a) the research objective, (b) the sample, (c) the descriptive statistics, and (d) the conclusions made in the study. Answer: (a) to determine the percentage of registered voters who would vote for the current vice president if he ra for president (b) the 1391 registered voters surveyed (c) 36% of the respondents supported reelection (d) that 36% of all registered voters would vote for the current vice president if he ran for president MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 20) Which branch of statistics deals with the organization and summarization of collected information? A) Inferential statistics B) Descriptive statistics C) Computational statistics D) Survey design Answer: B Classify the variable as qualitative or quantitative. 21) the colors of book covers on a bookshelf A) qualitative B) quantitative Answer: A 4 22) the number of calls received at a company's help desk A) quantitative B) qualitative Answer: A 23) the number of seats in a school auditorium A) qualitative B) quantitative Answer: B 24) the numbers on the shirts of a boy's football team A) qualitative B) quantitative Answer: A 25) the bank account numbers of the students in a class A) quantitative B) qualitative Answer: B 26) the weights of cases loaded onto an airport conveyor belt A) qualitative B) quantitative Answer: B 27) the temperatures of cups of coffee served at a restaurant A) quantitative B) qualitative Answer: A 28) the native languages of students in an English class A) qualitative B) quantitative Answer: A Solve the problem. 29) A bicycle manufacturer produces four different bicycle models. Information is summarized in the table below: Model Series Number Weight Style Ascension A120 32 Mountain Road Runner B640 21 Road All Terrain C300 27 Hybrid Class Above D90 15 Racing Identify the variables and determine whether each variable is quantitative or qualitative. A) series number: quantitative; weight: quantitative; style: qualitative B) series number: qualitative; weight: qualitative; style: qualitative C) series number: qualitative; weight: quantitative; style: qualitative D) series number: quantitative; weight: qualitative; style: qualitative Answer: C