Exam2Review1031-6-1

# Fill in the blank 2 2 a professor wants to know

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Fill in the Blank: 2 2 . A professor wants to know whether there is a difference between scores from Exam 1 and Exam 2, to determine this the professor uses a -tailed test to test her hypothesis. 2 3 . tell us that as our sample size increases, the greater the chance that our sample means will be close to the population mean. 2 4 . states that the greater our sample size is, the more normal our distribution of sample means will be. 2 5 . As the variability in our sample increases , the effect size _______________. 2 6 . measures the expected average distance between a sample mean and the population mean. True or False: 27. You can only assume that the sampling distribution of M is normally distributed for a large sample size. 28. A t-statistic can be used to test hypotheses about a completely unknown population. 29. One of the required assumptions of the z test is that the observations made as part of the study is independent of each other. 30. A Within-Subjects design is used to evaluate the mean difference for two populations using two sample groups.

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31. A type II error is when researchers fail to reject the null hypothesis when it is actually false.
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