Instruction 19-3
a Perfume Manufacturer Is Trying to Choose Between $\begin{array}{cc}\text { Padkage } & \text { Scratch } \\\hline 52 & 37 \\68 & 43 \\43 & 53 \\48 & 39 \\56 & 47\end{array}$

question 20

Multiple Choice

Instruction 19-3
A perfume manufacturer is trying to choose between two 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 both layouts to five groups and determines the approval rating from each group on both layouts. The data are given below. Use this to test whether the median difference in approval rating is different from zero in favour of the more expensive layout with a level of significance of 0.05.
$\begin{array}{cc}\text { Padkage } & \text { Scratch } \\\hline 52 & 37 \\68 & 43 \\43 & 53 \\48 & 39 \\56 & 47\end{array}$

-Referring to Instruction 19-3,what is the appropriate test to use?

• A) Wilcoxon signed rank test for difference in median
• B) Wilcoxon signed rank test for median difference
• C) Wilcoxon rank sum test for median difference
• D) Wilcoxon rank sum test for difference in median

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Definitions:

General Ledger

The primary ledger, when used in conjunction with subsidiary ledgers, that contains all of the balance sheet and income statement accounts.

Receivables

Money owed to a company by its customers or clients for goods or services that have been delivered or used, but not yet paid for.

Maker

Maker often refers to an individual or entity responsible for creating or manufacturing something, often within contexts like craftsmanship, invention, or production.

Promising to Pay

A commitment or agreement by an individual or entity to fulfill a financial obligation at a future date.