Examlex
Experimental subjects are given a pill to test its effectiveness on reducing the duration of a cold. How should the control group be treated?
Critical Value Approach
A method of statistical testing which involves comparing the calculated value of a test statistic to a critical value to decide whether or not to reject the null hypothesis.
Null Hypothesis
A statement used in statistics that proposes there is no significant difference or effect, serving as the default assumption to be tested against an alternative hypothesis.
Test Statistic
A statistic (a function of the data) used in statistical hypothesis testing to decide whether to reject the null hypothesis.
P-value Approach
A method in hypothesis testing that uses the p-value, the probability of obtaining test results at least as extreme as the observed, under the assumption the null hypothesis is true.
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