form3 - = m z n m z n Large-sample Significance Tests: Test...

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STA 2023H Exam 3 Formulas Sample Proportion: (X~binomial(n,p)) n p p p n X p p p ) 1 ( sixe sample Sample in Succeses of # ^ ^ ^ - = = = = σ μ Sample Mean: (E(X i )= μ , V(X i )= σ 2 ) n n X X X X i = = = Central Limit Theorem: For random samples of size n (with finite means and standard deviations), the sampling distributions of sample proportions and means will be approximately normal for large n. Margin of Error (C% Confidence) z * *(Standard Error) Confidence Interval: estimate ± margin of error Sample Size for margin of error to be m : 2 * 2 * 25 . 0 : Proportion Sample : Mean Sample =
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Unformatted text preview: = m z n m z n Large-sample Significance Tests: Test Statistic: error standard ) H parameter(-estimate z = obs P-value: ) ( P : Tailed-Lower ) P( : tailed-er Upp ) 2P( : tailed-2 obs obs obs z Z z Z z Z Rejection Region ( =P(Type I Error)): z z z z z z obs obs obs- : Tailed-Lower : Tailed-Upper | | : Tailed-2 2 / Difference between two means: Estimate: 2 1 X X-Standard Error: 2 2 2 1 2 1 n n +...
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This note was uploaded on 06/04/2011 for the course STA 2023 taught by Professor Ripol during the Fall '08 term at University of Florida.

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