Q Math 54 Collected Work Section 1.4 Collected Work Name: Total points: 10 1. (6) Determine the type of sampling used. a. One election day, a pollster for Fox News positions herself outside a polling place near her home and asks the first 50 voters leaving the facility to complete a survey. b. An Internet service provider randomly selects 15 residential blocks from a large city and surveys every household in these 15 blocks to determine the number that would use a high- speed Internet services. c. Officers for the DMV pull aside every 40th tractor trailer passing through a weigh station, starting with the 12th, for an emission test. 2. (4) The math department at a university wishes to administer a survey to a sample of students taking college algebra. The department is offering 32 sections of college algebra, similar in class size and makeup, with a total of 1280 students. They would like the sample size to be roughly 10% of the population of college algebra students this semester. a. How might the department obtain a simple random sample? b. How might the department obtain a stratified sample? 1

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