Answer each of the following questions with complete sentences. Include a brief explanation in complete sentences. A. You are reading an article in your field that reports several statistical analyses. The article says that the P-value for a significance test is 0.045. Is this result significant at the 5% significance level? B. Is the result with P-value 0.045 significant at the 1% significance level? C. For another significance test, the article says only that the result was significant at the 1% level. Are such results always, sometimes, or never significant at the 5% level? D. The reaction times of a subject to a stimulus are strongly skewed to the right because of a few slow reaction times. You wish to test Ho: μ1 = μ2 where μ1 is the mean reaction time for Stimulus 1, and μ2 for Stimulus 2. You have two independent samples, 8 observations for Stimulus 1 and 10 for Stimulus 2. Which, if any, of the tests you have studied can be used to test this? E. You read an article that contains a 95% confidence interval. Would the margin of error in a 99% confidence interval computed from the same data be less, the same, or greater?
Answer each of the following questions with complete sentences. Include a brief explanation in complete sentences.
A. You are reading an article in your field that reports several statistical analyses. The article says that the P-value for a significance test is 0.045. Is this result significant at the 5% significance level?
B. Is the result with P-value 0.045 significant at the 1% significance level?
C. For another significance test, the article says only that the result was significant at the 1% level. Are such results always, sometimes, or never significant at the 5% level?
D. The reaction times of a subject to a stimulus are strongly skewed to the right because of a few slow reaction times. You wish to test Ho: μ1 = μ2
where μ1 is the mean reaction time for Stimulus 1, and μ2 for Stimulus 2. You have two independent samples, 8 observations for Stimulus 1 and 10 for Stimulus 2. Which, if any, of the tests you have studied can be used to test this?
E. You read an article that contains a 95% confidence interval. Would the margin of error in a 99% confidence interval computed from the same data be less, the same, or greater?
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