# Out of 25 points in an one sample is compared to a

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Question 27 2.5 out of 2.5 points In a(n) ________, one sample is compared to a population for which we only know
the mean during hypothesis testing.
Question 28 2.5 out of 2.5 points The comparison distribution for an independent-samples t test is a distribution of:
Question 29 2.5 out of 2.5 points The critical cutoff(s) for a two-tailed, paired-samples t test with 23 participants at a p level of 0.05 is (are):
Question 30 0 out of 2.5 points What is the formula for the paired-samples t test?
Question 31 2.5 out of 2.5 points For the single-sample t test, the confidence interval is centered around the:
Question 32 0 out of 2.5 points In order to report the exact p value associated with the test statistic (result) for an independent-samples t test, we need to:
Question 33 2.5 out of 2.5 points Which of the following statements is true about the assumptions of the independent-samples t test?
Question 34 2.5 out of 2.5 points A psychologist is interested in whether working memory is influenced by sleep loss. The psychologist administers a measure of working memory to a group of subjects at 8 A.M. on Day One of the study and then again at 8 A.M. on Day Two
of the study, after keeping the subjects awake the entire night. Does sleep loss affect working memory? What is the statistical analysis we would perform to answer this question?
Question 35 2.5 out of 2.5 points Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. They randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. The dependent variable in this study is:
Question 36 2.5 out of 2.5 points The formula for the research hypothesis for a paired-samples t test is: 1
Question 37 2.5 out of 2.5 points The American Psychological Association encourages research to report the following for paired-samples t tests:
Question 38 2.5 out of 2.5 points For an independent-samples t test, there were 8 participants in Group 1 and 11 participants in Group 2. The total degrees of freedom were:
Question 39 2.5 out of 2.5 points According to the null hypothesis, the mean difference for the comparison distribution in a paired-samples t test is:
Question 40 2.5 out of 2.5 points We have learned three t tests, including all of the following except:
samples