Exhibit 20

question 63

Multiple Choice

Exhibit 20.2.A trading magazine wants to determine the number of hours stock brokers work each week.In particular,the trading magazine wants to determine if the median numbers worked per week differs from 100 hours.The magazine samples 18 traders.For the Wilcoxon Signed-Rank Test,the value of the test statistic is . Refer to Exhibit 20.2.Since the sample size is at least 10,T can be assumed normally distributed with mean and standard deviation:

• A)85.50,527.25
• B)22.96,527.25
• C)22.96,85.50
• D)85.50,22.96

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Definitions:

Invoice

A document issued by a seller to a buyer that specifies the goods or services provided, their prices, and the total amount owed.

Six Sigma

A set of techniques and tools for process improvement, aimed at reducing defects and improving quality by using a data-driven approach.

Tolerance Range

The range within which a particular environmental factor is permissible for the survival of an organism.

Defects

Imperfections, faults, or flaws in a product or service that detract from its intended quality or functionality.