A researcher surveyed 1500 people in a national random sample and found that 53% of the voters surveyed reported they will vote for Barack Obama. She claims that she is 68% confident that the population mean will be between 51% and 55%. This means the standard error would be ________
a. 1%
b. 2%
c. 4%
d. 95%
b
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The first Earth Day, in 1970, was the birth of the environmental movement
Indicate whether this statement is true or false.
Answer the following statement(s) true (T) or false (F)
1. The Chinese government allows its citizens to freely search the Internet. 2. The hacker movement is characterized by people who think that computers and the Internet are an evil force destroying American society. 3. By 2018, less than half of Americans were online with mobile devices like smartphones and tablets. 4. By 2018, 89% of American adults were online in one way or another. 5. By 2018, more than two thirds of Americans reported going online with their mobile device.
John is a first year History teacher at a small, public high school. The students enjoy his class
because he engages them in lively discussions and asks them to prepare and present material rather than just lecturing to them the entire period. The principal's teaching philosophy differs, however, and he tells John to be more authoritative. He says, "The students should not be presenting material or have any say in the structure of the course. If you continue to teach in this manner, we may not be able to renew your contract next year." John must way the value of his student-centered teaching style with the need for pleasing someone else to keep his job. He decides that he cannot compromise his teaching style, and he will look for a school that appreciates and will allow him to practice his philosophy. Which of Johannesen's ethical standards did John use to make his final decision? A. Human perspective B. Dialogic perspective C. Political perspective D. Situational perspective
Which of the following sampling techniques is likely to create the most representative sample of a population?
a. convenience sampling b. purposive sampling c. quota sampling d. simple random sampling