# Ch. 7 - 1.A population has a standard deviation of 16. If a...

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Sheet1 Page 1 1.A population has a standard deviation of 16. If a sample of size 64 is selected from this population, what is the probability th a mean will be within 2 of the population mean? a. 0.3413 b. Since the mean is not given, there is no answer to this question. c. -0.6826 d. 0.6826 2.The closer the sample mean is to the population mean, a. the larger the sampling error b. the smaller the sampling error c. the sampling error equals 1 d. None of these alternatives is correct. 3.Since the sample size is always smaller than the size of the population, the sample mean a. must always be smaller than the population mean b. can be smaller, larger, or equal to the population mean c. must be equal to the population mean d. must be larger than the population mean 4. As the sample size increases, the a. standard error of the mean increases b. population mean increases c. standard error of the mean decreases d. standard deviation of the population decreases 5. The probability distribution of the sample mean is called the

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## This note was uploaded on 04/22/2008 for the course EC 271 taught by Professor Ball during the Spring '08 term at Quinnipiac.

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Ch. 7 - 1.A population has a standard deviation of 16. If a...

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