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10 - ttests

# 10 - ttests - Hypothesis Testing Formulate H0 and H1 Select...

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Hypothesis Testing Hypothesis Testing Formulate H 0 and H 1 Choose Significance Level Select Appropriate Test Data Collection Determine Critical Value Compare the Probability Reject or FTR

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Ordinal Data or less: Ordinal Data or less: Cross Cross - Tabulations Tabulations Interval data: t-tests t-tests - - test for the significant differences between means. Looking for significant differences in means at our significance level (p .05). - ex: can tell if customers are significantly more satisfied at one location or another - if price is perceived to be significantly higher in one region versus another
interval data comparing attitudinal items 3 t-tests: 3 t-tests: 1. One sample 2. Two Independent Samples 3. Paired Samples t-tests t-tests

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1. One Sample One Sample - test the mean of a single variable against a given value. t-statistic: t = ( x - μ ) s x (standard error) o Example: 20 consumers must evaluate a prototype product 7 on a 10 point scale in order for the product to be introduced to market.
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10 - ttests - Hypothesis Testing Formulate H0 and H1 Select...

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