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1) What is the difference between probability sampling and simple random sampling?

A. There is no difference.
B. Simple random sampling is a type of probability sampling.
C. In probability sampling each item has an identical chance of being chosen.
D. Probability sampling is a type of simple random sample.

2) A poll is planned to determine what proportion of all students favor an increase in fees to support a new track and field stadium. A questionnaire will be published and the first 1000 completed questionnaires will be analyzed. Which of the following errors will be associated with the sample?

A. Sampling errors and errors due to selection bias
B. Only non-sampling errors
C. Sampling errors only
D. Errors due to interviewer bias and selection bias

3) A sufficiently large coverage error will result in which of the following?

A. Non-response bias
B. Statistics about the actual population rather than the target population
C. Inability to perform inferential statistics
D. Probability sampling

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