SCENARIO 10-12 A Quality Control Engineer Is in Charge of the Manufacture

question 151

Short Answer

SCENARIO 10-12
A quality control engineer is in charge of the manufacture of USB flash drives.Two different processes can be used to manufacture the flash drives.He suspects that the Kohler method produces a greater proportion of defects than the Russell method.He samples 150 of the Kohler and 200 of the Russell flash drives and finds that 27 and 18 of them,respectively,are defective.If Kohler is designated as "Group 1" and Russell is designated as "Group 2," perform the appropriate test at a level of significance of 0.01.
-Referring to Scenario 10-12,construct a 90% confidence interval estimate of the difference in proportion between the Kohler and Russell flash drives that are defective.

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Definitions:

Overapplied Overhead

When the allocated manufacturing overhead cost exceeds the actual overhead incurred, resulting in a surplus in the cost coverage.

Activity Cost Pools

Aggregations of all the costs associated with particular activities, used in activity-based costing.

Expected Activity

The anticipated level of operations or output, often used in budgeting and planning.

Predetermined Overhead Rate

A calculated estimate used for allocating overhead costs to products or services, based on an established measure such as labor hours or machine usage, facilitating budgeting and financial planning.