Examlex
A company shows the following balances: What is the gross profit rate?
Statistical Power
The probability that a test will correctly reject a false null hypothesis; a measure of a test's ability to detect an effect, if there is one.
Type II Error
The statistical mistake of failing to reject a false null hypothesis, also known as a false negative.
Sample Size
The number of observations or items selected from a larger population for the purpose of statistical analysis.
Directional Hypothesis
A hypothesis that specifies the direction of the expected difference or relationship.
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