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Amphetamine prescriptions are more popular today than in the past.
P-values
Measures that help determine the significance of results obtained in statistical hypothesis testing, indicating the probability of observing results if the null hypothesis were true.
Levels Of Significance
A threshold in hypothesis testing that determines the probability at which the null hypothesis is rejected, often denoted by alpha.
P-value
The probability of obtaining test results at least as extreme as the observed results, assuming that the null hypothesis is true.
Test Statistic
A calculated value from sample data that is used in a hypothesis test to determine whether to reject the null hypothesis, based on the likelihood of observing the sample data under the null hypothesis.
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