1. Example 1 A record company is interested in the difference in their ratings for two different artists. Given the ratings below, are the artists significantly different using the p <.05 criterion?

2. Data

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12. Confidence Interval

13. Effect Size

14. Example 2 With those same artists, who is selling more albums? The R&B artist or the Pop artist? Use the p <.05 criterion.

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25. Confidence Interval

26. Effect Size