The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation, attitudes, and study habits of college students. Scores range from 0 to 200 and follow (approximately) a normal distribution with mean 115 and standard deviation o= 25. You suspect that incoming freshman have a mean μ, which is different from 115, since they are often excited yet anxious about entering college. To verify your suspicion, you test the following hypotheses. Ho: μ = 115 vs. Ha: H = 115 You give the SSHA to 25 incoming freshmen and find their mean score. Based on this, you reject Ho at significance level a = 0.01. Which of the following would be most helpful in assessing the practical significance of your results? O Construct a 99% confidence interval for u to see the magnitude of the difference between 115 and your sample results. O Take another sample and retest just to make sure the results are not due to chance. O Report the P-value of your test. O Test the hypotheses again, this time using significance level a = 0.001.

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The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation, attitudes, and study habits of college students.
Scores range from 0 to 200 and follow (approximately) a normal distribution with mean 115 and standard deviation o = 25. You suspect that incoming
freshman have a mean μ, which is different from 115, since they are often excited yet anxious about entering college. To verify your suspicion, you
test the following hypotheses.
Ho: u 115 vs. Ha: 115
You give the SSHA to 25 incoming freshmen and find their mean score. Based on this, you reject Ho at significance level a = 0.01. Which of the
following would be most helpful in assessing the practical significance of your results?
O Construct a 99% confidence interval for u to see the magnitude of the difference between 115 and your sample results.
O Take another sample and retest just to make sure the results are not due to chance.
O Report the P-value of your test.
O Test the hypotheses again, this time using significance level a = 0.001.
Transcribed Image Text:The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation, attitudes, and study habits of college students. Scores range from 0 to 200 and follow (approximately) a normal distribution with mean 115 and standard deviation o = 25. You suspect that incoming freshman have a mean μ, which is different from 115, since they are often excited yet anxious about entering college. To verify your suspicion, you test the following hypotheses. Ho: u 115 vs. Ha: 115 You give the SSHA to 25 incoming freshmen and find their mean score. Based on this, you reject Ho at significance level a = 0.01. Which of the following would be most helpful in assessing the practical significance of your results? O Construct a 99% confidence interval for u to see the magnitude of the difference between 115 and your sample results. O Take another sample and retest just to make sure the results are not due to chance. O Report the P-value of your test. O Test the hypotheses again, this time using significance level a = 0.001.
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