A Researcher Selects a Sample of Six Professors,six Students,and Six

question 80

Multiple Choice

A researcher selects a sample of six professors,six students,and six administrators at a local school and has them rate the effectiveness of an innovative new teaching style.In this example,is it possible that the weighted mean ratings will equal the arithmetic mean for the entire sample of 18 participants?

• A) No, the weighted mean is never exactly equal to the arithmetic mean.
• B) Yes, because there are an equal number of participants in each sample.
• C) Yes, because the sample sizes are selected from the same school.
• D) It is not possible to know this without knowing the mean for each sample.

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Definitions:

Direct Labor-Hours

The total hours of labor directly involved in the manufacturing process, crucial for calculating labor costs and production efficiency.

Direct Materials Cost

The cost of raw materials that can be directly attributed to the production of goods.

Activity-Based Costing

A costing methodology that assigns overhead and indirect costs to specific products or projects based on their consumption of resources.

Direct Labor-Hours

The total hours worked directly on manufacturing a product or providing a service.