A National Manufacturer of Ball Bearings Is Experimenting with Two

question 34

Multiple Choice

A national manufacturer of ball bearings is experimenting with two different processes for producing precision ball bearings. It is important that the diameters be as close as possible to an industry standard. The output from each process is sampled and the average error from the industry standard is measured in millimeters. The results are presented here. The researcher is interested in determining whether there is evidence that the two processes yield different average errors. The population standard deviations are unknown but are assumed equal. What is the computed value of t?

• A)+2.797
• B)−1.000
• C)−3.299
• D)0.5938

---

Definitions:

Job-Order Costing

An accounting method that assigns costs to specific production batches or jobs, used in situations where goods or services are distinctive.

Selling Price

The amount of money for which a product or service is offered to the market.

Unit Product Costs

The calculation of the total cost (including materials, labor, and overhead) to produce a single unit of a product.

Job M598

A specific task or project identified by code M598 within a job costing system, where costs are tracked individually.