whether the interaction will be significant. Calculate the marginal means and draw a bar graph by hand or in Excel. Extend the table with this information. If there is an interaction, what kind it is and why do you think so?   B1 B2   A1 20 40 M = 30 A2 35 25 M = 30 A3 35 25 M = 30   M = 30 M = 30

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