Examlex
Which of the following statements is true concerning a positive reaction to the PPD skin test?
Test Statistic Value
A value derived from sample data during a hypothesis test, used to determine whether to reject the null hypothesis within the context of the test.
Significance Level
The threshold under which the p-value falls to reject the null hypothesis, typically set at 0.05 or 5%.
Critical Value
A threshold in a statistical test that defines the boundary between where a statistical hypothesis would be considered significantly different or not.
Null Hypothesis
A default hypothesis that there is no significant difference or effect, to be tested against the alternative hypothesis.
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