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4** preference, which produce a significantly lower customer preference, and which have the same. To use individual t-test combinations for this purpose wouldas discussedincrease the likelihood of an erroneous assumption of differences known 9.5 Tests for k Independent Samples 305 Y e.g. colour "blue" Y e.g. colour "yellow" X3 g. name X- X X2 Xz x X2 Beethoven Bonbons 1. No interaction effect 3. Disordinal interaction effect Y Y X X2 X2 2. Ordinal interactions effect x X2 X2 4. Disordinal interaction effect (Cross Over) Fig. 9.30 Interaction effects with multiple-factor ANOVA 10250 10000 Estimated Marginal Means 9750 9500 9250 Colour of the packing blue ... yellow Chocolate Choc Beethoven Dream Champ Bonbon Name of the product Exercise 2 You are given the task of sampling the household size of customers at a grocery store and the number of bananas they buy