March 10, 2008

March 10, 2008 - IV. Sign test on SPSS V. Submit computer...

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March 10 Outline I. Review of hypothesis testing logic A. State the alternative (H 1 ) and null (H 0 ) hypotheses B. Test the null hypothesis 1. Compute the probability that the outcome in the sample is due to chance 2. Compare that probability with α 3. Make a decision a. If the probability < α , reject H 0 b. If the probability > α , retain H 0 II. Continuation of sign test example III. Possible hypothesis testing outcomes, using a trial analogy
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Unformatted text preview: IV. Sign test on SPSS V. Submit computer assignments Type I error: a decision to reject the null hypothesis when it is true (to conclude that the results are due to the independent variable, when in fact they are due to chance) Type II error: a decision to retain the null hypothesis when it is false (to conclude that the results are due to chance, when in fact they are due to the independent variable)...
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March 10, 2008 - IV. Sign test on SPSS V. Submit computer...

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