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A consumer advocate is interested in evaluating the claim that a new granola cereal contains 4 ounces of cashews in every bag. The advocate recognizes
A consumer advocate is interested in evaluating the claim that a new granola cereal contains 4 ounces of cashews in every bag. The advocate recognizes that amounts of cashews will vary slightly from bag to bag, but she suspects that the mean amount of cashews per bag is less than 4 ounces. To check the claim, the advocate purchases a random sample of 40 bags of cereal and calculates a sample mean of 3.68 ounces of cashews. She finds the P-value to be 0.0048 for testing H0: = 4 versus Ha: < 4. Can she conclude that the bags are incorrectly labeled at = 0.05? Yes, because P-value = 0.0048 < = 0.05 No, because P-value = 0.0048 > = 0.05 Yes, because P-value = 0.0048 > = 0.05 No, because P-value = 0.0048 < = 0.05
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