1) Classify each data variable as categorical, quantitative-continuous, or quantitative-discrete. a) Car color. Categorical / Quantitative- Continuous/ Quantitative-Discrete b) Number on jerseys uniform. Categorical / Quantitative- Continuous/ Quantitative-Discrete c) Number of seats in a classroom. Categorical / Quantitative- Continuous/ Quantitative-Discrete d) Zip code. Categorical / Quantitative- Continuous/ Quantitative-Discrete e) Age in year. Categorical / Quantitative- Continuous/ Quantitative-Discrete 2) Identify the level of measurement for each data variable (nominal, ordinal, interval, ratio): a) Age in year. (nominal, ordinal, interval, ratio): b) Temperature (in Fahrenheit) in a refrigerator. (nominal, ordinal, interval, ratio): c) Amount of sugar in g in a drink. (nominal, ordinal, interval, ratio): d) Number of pages in a book. (nominal, ordinal, interval, ratio): e) Marital status. "single", "married", "divorced", "widowed" (nominal, ordinal, interval, ratio): f) Movie rating: "poor", "good", "excellent". (nominal, ordinal, interval, ratio): 3) Determine if the following quantitative data are continuous or discrete. a) Temperature (in Fahrenheit) refrigerators. Continuous / discrete. b) Amount of tar (in milligrams) in cigarettes. Continuous / discrete. c) Number of pages in a book. Continuous / discrete. d) Distance (in miles) from home to airport. Continuous / discrete. 4) The frequency table below summarizes favorite music genre from a sample of students. rel. frequency Music Genre frequency a) Calculate the relative frequencies in percent for each (percent) category. Round to one decimal place of a percent. Pop 6 % Classical 2 % b) What percent of students choose Country OR Pop as Country 6 % favorite? Jazz 3 % Others 5 % c) What percent of students do not choose Country as favorite? 5) Determine the sampling method used (Simple random, systematic, stratified, cluster, or convenience) a) All residents in Fremont are ordered and every 500th resident is contacted to participate in a survey. b) The counseling department randomly selects 12 Ohlone classes and surveys all students in the 12 classes about their knowledge of the services available to them. c) A member of the math department stands in front of the Math Building and asks people entering, "Do you like Math?" d) A market researcher randomly selects 200 drivers under 35 years of age of 100 drivers over 35 years of age. e) The name of 20 contestants are written on 20 cards, the cards are placed in a bag and three names are picked from the bag.f) A radio station asks listeners to call in and give their opinion of the nation's economy. g) A random number generator software is used to randomly select 56 customers in its 560 customers in the customer list to study customer shopping preferences. h) To test the effectiveness of a new sleeping aid, 20 male and 20 female subjects are randomly selected. i) An airline selects top 10 customers who fly the most mileage on their opinion on providing free Wi-fi on board. 6) Which of the following scenarios represent random sampling without replacement? i) You pick a paper from a hat randomly and put it back, you pick more paper from the hat until you have five names. ii) You select a paper from a hat and don't put it back, you pick more paper from the hat until you have five names. 7) In a survey of 598 subjects, each was asked how often he or she played sports. The survey objects were internet users who response to a question that was posted on a news website. Determine if the observations are voluntary response sample. (select one below.) a) Yes, because the subjects self-select to participate. b) Yes, because anyone can participate. c) No, because users who responded are selected by the researcher. d) Yes, because subjects who responded are not selected by the researcher. What is wrong with this type of sampling method? (select all that applies.) a) The subject who participate may not represent the population the researcher has in mind. b) The subject may have strong opinion so will not represent the population. c) The subject may response more than once, so the response is not accurate. d) The subject who response are subjects who have time to answer survey questions. 8) A pair of studies was performed to measure the effectiveness of a new software program designed to help stroke patients regain their problem-solving skills. Patients were asked to use the software program twice a day, once in the morning and once in the evening. The studies observed 200 stroke patients recovering over a period of several weeks. The first study was performed by the company that designed the software program. The second study was performed by the American Medical Association. Which study is more reliable? (Select one below.) a) The first study is more reliable because the software company knows how to help patients to use it. b) The second study is more reliable because the organization will not gain benefit from the result of the study. 9) A local newspaper ran a survey by asking, "Do you support the development of a weapon that could kill millions of innocent people?" Determine whether the survey is bias. (Select one below.) a) There is no bias because the newspaper will not benefit from the result. b) There is potential bias because the question is a leading