General Cereals has just concluded a new advertising campaign for Fruit Crunch, its allnatural breakfast cereal with nuts, grains, and dried fruits. To test the effectiveness of the campaign, brand manager Alan Neebe surveyed 11 customers before the campaign and another 11 customers after the campaign. Given are the customers’ reported weekly consumption (in ounces) of Fruit Crunch:Before 14 5 18 18 30 10 8 26 13 29 24 After 23 14 13 29 33 11 12 25 21 26 34 (a) At α = 0.05, can Alan conclude that the campaign has succeeded in increasing demand for Fruit Crunch? (b) Given Alan’s initial survey before the campaign, can you suggest a better sampling procedure for him to follow after the campaign?

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