The mathematics 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. How might the department obtain a simple random sample? A stratiﬁed sample? A cluster sample? Which method do you think is best in this situation?
Answer to relevant QuestionsA school board at a local community college is considering raising the student services fees. The board wants to obtain the opinion of the student body before proceeding. Design a sampling method to obtain the individuals in ...What is bias? Name the three sources of bias and provide an example of each. How can a census have bias? A newspaper article reported, “The Cosmopolitan magazine survey of more than 5000 Australian women aged 18–34 found about 42 percent considered themselves overweight or obese.” The survey has bias. (a) Determine the ...How do you think caller ID has affected phone surveys? A pharmaceutical company has developed an experimental drug meant to relieve symptoms associated with the common cold. The company identiﬁes 300 adult males 25 to 29 years old who have a common cold and randomly divides ...
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