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Unformatted text preview: 1. A survey based on a random sample of 1000 students found that 1% of these students, when asked by the professor doing the survey, admitted to having cheated on at least one exam. The results of this study, if applied to all students in the university, are questionable because of A. lack of accuracy. B. selection bias. C. nonresponse bias. D. response bias. Quite possibly students would not respond honestly to their professor's inquiry resulting in response bias. Points Earned: 1/1 Correct Answer: D Your Response: D 2. When a representative sample is selected but only a small proportion contacted actually participate in the study, the problem is called A. nonresponse bias. B. response bias. C. lack of accuracy. D. selection bias. When a large number of subjects sampled do not participate in the study/survey, then the problem of nonresponse bias arise Points Earned: 1/1 Correct Answer: A Your Response: A 3. Which of the following is not true about drawing a simple random sample from a population? A. It requires that the size of the sample be no more than 5% of the size of the population. B. It protects against hidden or unknown biases. C. It gives each member of the population an equal chance of being selected....
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This note was uploaded on 12/06/2009 for the course STAT 200 at Pennsylvania State University, University Park.