A brand manager is concerned that her brand's market share may be evenly distributed throughout the country. In a survey in which the country was divided into four geographic region, a random sampling of 100 customers in each region was surveyed, with the following results. At a = 0.05, test whether the brand's market share is the same across the four regions.
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REGION
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Northeast
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Northwest
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Southwest
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Southeast
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Purchase the brand
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40
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55
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45
|
50
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Do not purchase
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60
|
45
|
55
|
50
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