tests4means (p)

tests4means (p) - Summary of Significance Tests for the...

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Summary of Significance Tests for the Mean of a Normal Population A. n large: σ known * Null Hypothesis, H 0 Alternative Hypothesis, H a or H 1 Test Statistic p-Value Decision Rule μ = 0 or 0 0 n x z 0 - = p = prob ( Z z ) Reject H 0 if p < α = 0 or 0 < 0 n x z 0 - = p = prob ( Z < –z ) Reject H 0 p < = 0 0 n x z 0 - = prob ( Z z ) p = or prob ( Z < –z ) Reject H 0 if p < α/2 * If unknown, use s to estimate . B. n small: normal population and unknown Null Hypothesis, H 0 Alternative Hypothesis, H a or H 1 Test Statistic p-Value Decision Rule = 0 or 0 0 n s x t 0 - = p = * for which t t n-1, * Reject
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