A Copy Machine Service Company Provides Maintenance and Repair Service

question 11

Multiple Choice

A copy machine service company provides maintenance and repair service for different types and brands of copiers. The manager of the repair department wants to know if the repair time for brand A is higher than the repair time for brand B. The manager randomly selects eight repair records associated with brand A and eight repair records associated with brand B. The distribution of repair times for both brand A and brand B is highly skewed. Which one of the following nonparametric tests is appropriate for this problem?

• A) Wilcoxon signed ranks test
• B) Wilcoxon rank sum test
• C) sign test
• D) Kruskal-Wallis test
• E) Spearman's rank correlation test

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Definitions:

Foregone Interest

The potential interest income lost when choosing to invest capital in one option over another.

Idle Workers

Employees who are not engaged in production or work activities due to lack of work, broken machinery, or inefficient job allocation, often leading to wasted resources.

Finding Suppliers

The process of identifying and selecting vendors or suppliers who can provide the necessary materials, products, or services for a business.

Customer Service

The assistance and advice provided by a company to those people who buy or use its products or services.