TABLE 12-17 A Perfume Manufacturer Is Trying to Choose Between 2 Magazine

question 168

Short Answer

TABLE 12-17
A perfume manufacturer is trying to choose between 2 magazine advertising layouts. An expensive layout would include a small package of the perfume. A cheaper layout would include a "scratch-and-sniff" sample of the product. The manufacturer would use the more expensive layout only if there is evidence that it would lead to a higher approval rate. The manufacturer presents the more expensive layout to 4 groups and determines the approval rating for each group. He presents the "scratch-and-sniff" layout to 5 groups and again determines the approval rating of the perfume for each group. The data are given below. Use this to test the appropriate hypotheses with the Wilcoxon rank sum test with a level of significance of 0.05.
-Referring to Table 12-17, the critical value of the test is ________.

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Definitions:

Brother

A male sibling or a man or boy in relation to other sons and daughters of his parents.

Past Consideration

A term in contract law meaning that an act done before a contract is made is not good consideration for the contract.

Sales Contract

A legal agreement between a buyer and a seller detailing the terms and conditions of a sale of goods or services.

Equitable Exchange

A transaction in which goods, services, or assets are traded based on fairness and balance in value.