THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 50

Essay

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A computer information systems manager was in charge of purchasing new battery packs for laptop computers.The choices were narrowed to two available models.Since the two models cost about the same,the manager was interested in determining whether there was a difference in the average time the battery packs would function before needing to be recharged.Based on two independent random samples,the following summary information was computed:

-Find a 90% confidence interval for the difference in average functioning time before recharging the two models.

---

Definitions:

Fixed Manufacturing Overhead

Costs that do not vary with production volume, such as rent, salaries of permanent staff, and depreciation of factory equipment.

Predetermined Overhead Rate

A rate calculated before the accounting period begins, used to allocate manufacturing overhead costs to individual units of production based on a certain activity base.

Variable Manufacturing Overhead

Costs that vary with production volume, such as indirect materials and utilities, related specifically to the manufacturing process.

Labor-Hours

The total number of working hours clocked by employees within a specific period, reflecting the labor input.