# Out of 25 points in a within groups design where one

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Question 72.5 out of 2.5 pointsIn a within-groups design where one group is measured twice over time, the appropriate hypothesis test is a(n):
Question 80 out of 2.5 pointsThe comparison distribution for an independent-samples t test is a distribution of:
Question 92.5 out of 2.5 pointsAccording to the null hypothesis, the mean difference for the comparison distribution in a paired-samples t test is:
Question 102.5 out of 2.5 pointsA study found statistically significant results for a hypothesis tested with an independent-samples t test. The author of the study reported her effect size for the test as 1.24. What is true of the two sample means?
Question 112.5 out of 2.5 pointsWe have learned three t tests, including all of the following except:
Question 122.5 out of 2.5 pointsFollowing are the results of an independent-samples t-test: t(18) = –2.11, p < 0.05. The results are:
Question 132.5 out of 2.5 pointsIn a(n) ________, one sample is compared to a population for which we only know the mean during hypothesis testing.
Question 142.5 out of 2.5 pointsTwenty college students experience the effects of alcohol on reaction time. They perform very basic timed responses in a driving simulator both before and after consuming several alcoholic beverages. The researcher collects a reaction time result for each of the 20 students before and after intoxication, for a total of 40 measures. What are the degrees of freedom for this study?
Question 152.5 out of 2.5 pointsChecking an independent-samples t test for the assumption of normality is part of step _____ of the six steps of hypothesis testing.
Question 16 2.5 out of 2.5 pointsIn an independent-samples t test, how is the research hypothesis symbolized?
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