# quiz_8 - Georgia Southern University College of Business...

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Unformatted text preview: Georgia Southern University, College of Business Administration BUSA 3131 Business Statistics Fall 2011 QUIZ 8 Name: _______________ 1. In hypothesis testing where the standard deviation (σ) of the population is known, we often test to verify that the sample mean ( x-bar ) is not less than some value. Is this a one or two-tailed test? a. one-tailed b. two-tailed 2. If we are mainly concerned about identifying observed values below some range, would the test be a lower-tail or an upper-tail test? a. lower-tail b. upper-tail 3. Only one of the following pairs of hypotheses correctly states the hypotheses for an upper tail test. Which one is correct? Pair A Pair B Pair C H o : μ ≥ μ o H o : μ ≤ μ o H o : μ ≤ μ o Ha : μ < μ o Ha : μ < μ o Ha : μ ˃ μ o 4. Only one of the following pairs of hypotheses correctly states the hypotheses for a lower tail test. Which one is correct? Pair A Pair B Pair C H o : μ ≥ μ o H o : μ ≤ μ o H o : μ ≤ μ o Ha : μ < μ o Ha : μ < μ o Ha : μ ˃ μ o 5. Only one of the following pairs of hypotheses correctly states the hypotheses for a two-tailed test. Which one is correct? Pair A Pair B Pair C H o : μ ≥ μ o H o : μ ≤ μ o H o : μ = μ o Ha : μ < μ o Ha : μ ≠ μ o Ha : μ ≠ μ o 6. In hypothesis tests where the standard deviation of the population is known, we sometimes test to verify that the sample mean is not different than some specific value. Is this a one-tail or a two tail test? a. one-tail b. two-tail 7. Sampling error ( SE) is a computer simulation of which of the following: a. the standard deviation of the mean of a sample b. the standard deviation of the mean of over 100 samples c. the mean of a sample d. the mean of a random sample 8. TRUE or FALSE: Sampling error ( SE ) is the estimate of variation among multiple samples called the sampling distribution ....
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quiz_8 - Georgia Southern University College of Business...

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