Test Yourself
True or False
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True
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True
These data are paired and follow a normal distribution which is a requirement for small samples that use the t-distribution.
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False
These data are paired and so need to be analysed as such using a paired t-test or one sample z-test.
True-False Question
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True
True: If the difference in the sample is in the opposite direction to the hypothesised difference for the one tailed test then the p-value will be greater than 0.5.
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True
True: This is the only information required to calculate a standard error and appropriate test statistic. However, we also need to ensure the conditions of the test and CI are met, which may require a look at the individual values in the sample.
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False
False: I would need the individual values to calculate the mean of the paired differences and SD. This information as well as the sample size are what is required to do a test and calculate a CI for simple paired data.