A company plans to promote a new product by using one of three advertising cam- paigns. To

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A company plans to promote a new product by using one of three advertising cam- paigns. To investigate the extent of product recognition from these three campaigns, 15 market areas were selected and 5 were randomly assigned to each advertising plan. At the end of the ad campaigns, random samples of 400 adults were selected in each area and the proportions who were familiar with the new product were recorded, as in Table 11.7. Have any of the analysis of variance assumptions been violated in this experiment?

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