Six_steps_to_Hypothesis_testing

Six_steps_to_Hypothesis_testing - pop) t-Scores Mu known,...

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Six steps to Hypothesis testing: (does not work for confidence intervals) 1. Research problem – stated in reference to the alternative hypothesis in common discourse language 2. Statistical hypothesis (see below) 3. decision rule - written out and draw a picture 4. calculations – either by hand or on Excel 5. decision – reject the null or retain the null 6. interpretation - – stated in reference to the alternative hypothesis in common discourse language Statistical Hypothesis: Simple Regression: (p 576) H 0: β 1 = 0 H 1: β 1 ≠ 0 Multiple Regression: (p619) H 0: β 1 = β 2 = β3 = 0 H 1: At least one   ≠ 0 β Z –Scores – one population mean: (p337) H 0: µ 1 = 200 (or whatever the pop mean is) H 1: µ 1≠ 200 ((or whatever the pop mean is) – 2 tailed)) Or H 1: µ 1 > 200 ((or whatever the pop mean is) – 1 tailed Mean greater than the pop) Or H 1: µ 1 < 200 ((or whatever the pop mean is) – 1 tailed Mean less than the

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Unformatted text preview: pop) t-Scores Mu known, sigma unknown (p357) Same statistical hypothesis as Z only dont have Sigma only small s. P-hat for one group (qualitative data yes/no or boy/girl) H 0: p = 0 H 1: p 0 (2 tailed) OR H 1: p > 0 (1-tailed) H 1: p < 0 (1-tailed t-Scores 2 independent sample means (p396,401) H 0: 1- 2 = 0 H 1: 1- 2 0 (2 tailed) OR H 1: 1- 2 > 0 (1-tailed) H 1: 1- 2 < 0 (1-tailed) t-Scores 2 paired or matched t sample means (p417) H 0: D = 0 H 1: D 0 (2 tailed) (usually directional) OR H 1: D > 0 (1-tailed) P-hat for two groups (qualitative data yes/no and boy/girl) H 0: p 1- p 2 = 0 H 1: p 1- p 2 0 (2 tailed) OR H 1: p 1- p 2 > 0 (1-tailed) H 1: p 1- p 2 < 0 (1-tailed H 1: p 1- p 2 < 0 (1-tailed)...
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This note was uploaded on 03/15/2011 for the course WCOB 1033 taught by Professor Jensen during the Spring '05 term at Arkansas.

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Six_steps_to_Hypothesis_testing - pop) t-Scores Mu known,...

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