Does Income Increase When You Get Married? to Investigate This,a

question 19

Multiple Choice

Does income increase when you get married? To investigate this,a college student has randomly selected people from his college town and collected income data for these people.They were categorized according to their marital status.The following results (in thousands of dollars) were obtained. The data are to be analyzed using the Wilcoxon rank sum test.Let W be the Wilcoxon rank sum test statistic equal to the sum of the ranks assigned to the married group.What is the value of z,the standardized value of W?

• A)0.84
• B)1.36
• C)1.43
• D)2.62

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Definitions:

Natural Monopoly

A market condition where due to high fixed or start-up costs, the most efficient number of firms in the industry is one.

Electric Power

The production and delivery of electricity through an interconnected network for uses such as lighting, heating, and powering appliances.

New Technology

The development and application of innovative tools, machines, techniques, and methods that improve the efficiency and productivity of operations.

Natural Monopolies

Industries where a single firm can supply a good or service to an entire market at a lower cost than two or more firms could, often due to economies of scale.