Find the Sample Size

question 9

Multiple Choice

Find the sample size.
-The Quality Control Department wants to estimate the true percentage of rework for
Electrical components to within ±4%, with 99% confidence. Based on similar past
Studies, the percentage of rework was found to be 12%. How many components should
They sample?

• A) 651
• B) 1000
• C) 344
• D) 438
• E) 579

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Definitions:

Raw Materials

The basic components or inputs used in the production process to manufacture finished goods.

Direct Labour

Labor costs that are specifically traceable to the production of goods or provision of services.

Raw Materials

The basic materials and components required at the start of the production process to manufacture goods.

Total Manufacturing Costs

The sum of all costs associated with producing a product, including direct materials, direct labor, and manufacturing overhead.