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# CHAPTER7A - CHAPTER 7SAMPLING AND SAMPLING DISTRIBUTIONS...

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CHAPTER 7—SAMPLING AND SAMPLING DISTRIBUTIONS MULTIPLE CHOICE 1. From a group of 12 students, we want to select a random sample of 4 students to serve on a university committee. How many different random samples of 4 students can be selected? a. 48 b. 20,736 c. 16 d. 495 ANS: D PTS: 1 TOP: Sampling 2. Parameters are 3. How many simple random samples of size 3 can be selected from a population of size 7? 4. Sampling distribution of is the 5. A simple random sample of 100 observations was taken from a large population. The sample mean and the standard deviation were determined to be 80 and 12 respectively. The standard error of the mean is a. 1.20

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b. 0.12 c. 8.00 d. 0.80 ANS: A PTS: 1 TOP: Inference 6. A population has a standard deviation of 16. If a sample of size 64 is selected from this population, what is the probability that the sample mean will be within 2 of the population mean? 7. The probability distribution of all possible values of the sample proportion is the 8. In computing the standard error of the mean, the finite population correction factor is used when 9. Convenience sampling is an example of a. probabilistic sampling b. stratified sampling c. nonprobabilistic sampling d. cluster sampling ANS: C PTS: 1 TOP: Sampling
10. Which of the following is an example of nonprobabilistic sampling? 11. Stratified random sampling is a method of selecting a sample in which

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