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    Mathematics A-Level

    critical region

    What critical region means in Mathematics A-Level, as defined for AQA, WJEC.

    Definitions of critical region

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    Reference: WJEC

    The set of test statistic values leading to rejection of H₀, bounded by critical values.
    WJEC · Statistical hypothesis testing (AS Unit 2: Applied Mathematics A)
    The set of values of the test statistic for which H₀ is rejected at the chosen significance level.
    AQA · O: Statistical hypothesis testing (study guide)

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