Exhibit 20

question 91

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.At the 1% significance level,the right-tail critical value is:

• A)1.645
• B)1.96
• C)2.33
• D)2.575

---

Definitions:

Cost Structure

The composition of fixed and variable costs that a company incurs in the process of producing goods or services.

Minimum Quantities

The smallest amount or number of items that can be produced, ordered, or maintained to ensure efficiency.

Profit Margins

A financial metric that measures the percentage of profit a company retains from its total revenue after subtracting the cost of goods sold and other expenses.

Maximum Amounts

Maximum Amounts refer to the highest possible quantities or levels that are permissible or achievable under certain conditions.