SCENARIO 8-2 A Quality Control Engineer Is Interested in the Mean Length

question 65

Short Answer

SCENARIO 8-2
A quality control engineer is interested in the mean length of sheet insulation being cut automatically by machine.The desired mean length of the insulation is 12 feet.It is known that the standard deviation in the cutting length is 0.15 feet.A sample of 70 cut sheets yields a mean length of 12.14 feet.This sample will be used to obtain a 99% confidence interval for the mean length cut by machine.
-Referring to Scenario 8-2,the confidence interval goes from_____ to_____ .

---

Definitions:

Special Order Price

The price charged for a product or service that is outside the company's normal scope of work or products; often tailored pricing for a specific customer request.

Variable Costing

A costing method that includes only variable production costs—direct materials, direct labor, and variable manufacturing overhead—in product cost calculation, contrasting with absorption costing that also includes fixed costs.

Product Costs

Costs that are incurred to create a product that is intended for sale to customers. This includes direct materials, direct labor, and manufacturing overhead.

Direct Labor

Costs associated with employees who are directly involved in the production of goods or the provision of services, such as wages for factory workers.