A study by consumer reports showed

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Reference no: EM131125339

A study by Consumer Reports showed that 64% of supermarket shoppers believe super- market brands to be as good as national name brands. To investigate whether this result ap- plies to its own product, the manufacturer of a national name-brand ketchup asked a sample of shoppers whether they believed that supermarket ketchup was as good as the national brand ketchup.

a. Formulate the hypotheses that could be used to determine whether the percentage of supermarket shoppers who believe that the supermarket ketchup was as good as the national brand ketchup differed from 64%.

b. If a sample of 100 shoppers showed 52 stating that the supermarket brand was as good as the national brand, what is the p-value?

c. At a = .05, what is your conclusion?

d. Should the national brand ketchup manufacturer be pleased with this conclusion? Explain.

Reference no: EM131125339

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