Mathematics, 21.02.2020 03:37 noah2o2o

A study showed that 66% of supermarket shoppers believe supermarket brands to be as good as national name brands. To investigate whether this result applies 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 66%. H0: p is Ha: p is
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 (to 4 decimals)?
c. At = .05, what is your conclusion? p-value is H0
d. Should the national brand ketchup manufacturer be pleased with this conclusion?

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Answer from: Quest

98%

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The answer is 9.7 cm

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