Statement of a problem № m40016


A consumer group claims that the mean annual consumption of cheddar cheese by a person in the United States is at most 10.3 pounds. A random sample of 100 people in the United States has a mean annual cheddar cheese consumption of 9.9 pounds. Assume the population standard deviation is 2.1 pounds. At α = 0.05, can you reject the claim? (a) Identify the claim and state H0 and Ha. (b) Find the standardized test statistic z. If convenient, use technology. (c) Find the P-value. If convenient, use technology. (d) Decide whether to reject or fail to reject the null hypothesis. (e) Interpret the decision in the context of the original claim.

New search. (Also 1294 free access solutions)

Online calculators