uizzaq6
dav_r_
06qzi.docxQUESTION 1
1. The level of significance
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can be any positive value |
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can be any value |
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is (1 - confidence level) |
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can be any value between -1.96 to 1.96 |
QUESTION 2
1. When the p-value is used for hypothesis testing, the null hypothesis is rejected if
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p-value ≤ α |
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α < p-value |
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p-value ≥ α |
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p-value = 1 - α |
QUESTION 3
1. When each data value in one sample is matched with a corresponding data value in another sample, the samples are known as
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corresponding samples |
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matched samples |
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independent samples |
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None of these alternatives is correct. |
QUESTION 4
1. What type of error occurs if you reject H0 when, in fact, it is true?
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Type II |
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Type I |
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either Type I or Type II, depending on the level of significance |
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either Type I or Type II, depending on whether the test is one tail or two tail |
QUESTION 5
1. The p-value is a probability that measures the support (or lack of support) for the
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null hypothesis |
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alternative hypothesis |
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either the null or the alternative hypothesis |
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sample statistic |
QUESTION 6
1. The power curve provides the probability of
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correctly accepting the null hypothesis |
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incorrectly accepting the null hypothesis |
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correctly rejecting the alternative hypothesis |
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correctly rejecting the null hypothesis |
QUESTION 7
1. A Type II error is committed when
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a true alternative hypothesis is mistakenly rejected |
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a true null hypothesis is mistakenly rejected |
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the sample size has been too small |
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not enough information has been available |
QUESTION 8
1. A two-tailed test is performed at 95% confidence. The p-value is determined to be 0.09. The null hypothesis
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must be rejected |
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should not be rejected |
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could be rejected, depending on the sample size |
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has been designed incorrectly |
QUESTION 9
1. Your investment executive claims that the average yearly rate of return on the stocks she recommends is at least 10.0%. You plan on taking a sample to test her claim. The correct set of hypotheses is
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H0: μ < 10.0% Ha: μ ≥ 10.0% |
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H0: μ ≤ 10.0% Ha: μ > 10.0% |
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H0: μ > 10.0% Ha: μ ≤ 10.0% |
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H0: μ ≥ 10.0% Ha: μ < 10.0% |
QUESTION 10
1. For a two-tailed test at 98.4% confidence, Z =
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1.96 |
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1.14 |
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2.41 |
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0.8612 |
