22. ADVANCED TOPIC: About how many participants do you need in each cell for 80% power in...

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22. ADVANCED TOPIC: About how many participants do you need in each cell for 80% power in each of the following planned studies, using the analysis of variance with p 6 .05?

Predicted Effect Size Design Effect

(a) Medium 2 * 2 Main effect

(b) Large 2 * 2 Main effect

(c) Medium 2 * 2 Interaction effect

(d) Medium 2 * 3 Three-level main effect

(e) Large 2 * 3 Three-level main effect

(f) Medium 2 * 3 Interaction effect

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