Statement of a problem № m40018


A consumer group claims that the mean annual consumption of peanuts by a person in the United States is greater than 6.5 pounds. A random sample of 60 people in the United States has a mean annual peanut consumption of 6.8 pounds. Assume the population standard deviation is 2.1 pounds. At α = 0.01, can you support the claim? (a) Identify the claim and state H0 and Ha, (b) Find the standardized test statistic z, (c) Find the P-value, (d) Decide whether to reject or fail to reject the null hypothesis, (e) Interpret the decision in the context of the original claim.

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