Mathematics A-Level
tail probability calculation
What tail probability calculation means in Mathematics A-Level, as defined for WJEC.
Definition of tail probability calculation
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Reference: WJEC
For an upper-tail test with observed x, computing P(X ≥ x); for a lower-tail test, computing P(X ≤ x); for a two-tailed test, doubling the tail probability or comparing to α/2.
Topics that use tail probability calculation
Related terms
- actual significance level
- binomial hypothesis testing
- contextual interpretation
- critical region
- nominal significance level
- null hypothesis
- p-value
- significance level
Using tail probability calculation in the exam
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