MATH302 Week 1 Knowledge Check Homework Practice Questions APU

1. Question: A group of test subjects is divided into twelve groups; then four of the groups are chosen at random. What type of sampling is used? 2. Question: The first 50 people who walk into a sporting event are polled on their television preferences. What type of sampling was used? 3. Question: What is the sampling method used in the following scenario? The marketing manager for an electronics chain store wants information about the ages of its customers. Over the next two weeks, at each store location, 100 randomly selected customers are given questionnaires to fill out asking for information about age, as well as about other variables of interest. 4. Question: A market researcher polled every tenth person who walks into a store. What type of sampling was used? 5. Question: What is the sampling method used in the following scenario? A teacher wants to know if her students are doing homework, so she randomly selects rows two and five and then calls on all students in row two and all students in row five to present the solutions to homework problems to the class. 6. Question: What is the sampling method used in the following scenario? A teacher wants to know if her students are doing homework, so she randomly selects rows two and five and then calls on all students in row two and all students in row five to present the solutions to homework problems to the class. 7. Question: What is the term for a characteristic or attribute that can assume different values? 8. Question: A marketing company is interested in the proportion of people who will buy a particular product. Identify the statistic. 9. Question: Crime-related and demographic statistics for 47 US states were collected from government agencies, including the FBI's Uniform Crime Report. One analysis of this data found a strong connection between education and crime indicating that higher levels of education in a community correspond to higher crime rates. Which of the potential problems with samples discussed below could explain this connection? 10. Question: Round the fraction to four decimal places. 11. Question: The local news is conducting a poll of the residents' opinions regarding a new traffic law that is being proposed. At the end of a news segment, viewers had the opportunity to dial in or use social media to choose whether they agree or disagree with the law. A large sample size was represented, and this poll was repeated again one week later with similar results. When working with this data, which of the following statements best applies? 12. Question: You are collecting the same data and receive very different results from your classmates. What do you do? 13. Question: Round the number 1599.666667 to the nearest hundredth. 14. Question: Use the following information to answer the question: The (incomplete) table below contains data on hurricanes that have made direct hits on the U.S. Between 1851 and 2004. A hurricane is given a strength category rating based on the minimum wind speed generated by the storm. What is the relative frequency of direct hits that were category 4 hurricanes? 15. Question: Fifty part-time students were asked how many courses they were taking this term. The (incomplete) results are shown below: Answer the following two questions: What percent of students take exactly two courses? Round to a whole number. Do not include decimals. What percent of students take one or two courses? Round to a whole number. Do not include decimals. 16. Question: What measurement scale is used in the following example? Color of your hair. 17. Question: What measurement scale is used in the following example? Political outlook: extreme left, left- of-center, right-of-center, extreme right 18. Question: What measurement scale is used in the following example? The colors of crayons in a 24-crayon box 19. Question: What measurement scale is used in the following example? Common letter grades: A, B, C, D and F 20. Question: What measurement scale is used in the following example? The dates 1066, 1492, 1644, 1947 and 1944