Compute the necessary simple effects to explain the results of Exercise 17.13. What do these results tell

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Compute the necessary simple effects to explain the results of Exercise 17.13. What do these results tell you about the effects of smoking?

Exercise 17.13

Run the analysis of variance on the data in Exercise 17.12 and draw the relevant conclusions.

Exercise 17.12

In Chapter 16 we had three different examples from a study by Spilich et al. (1992) in which we compared three groups on the basis of smoking behavior. We can set this design up as a 3 × 3 factorial by using Task as one variable and Smoking group as the other.

The dependent variable was the number of errors the participant made on that task.

These data are repeated on the next page.image text in transcribed

Plot the cell means for this design.

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