A Placebo Is an Important Element of Many Clinical Trials

question 30

Multiple Choice

A placebo is an important element of many clinical trials because:

• A)it serves as a control for the experiment.
• B)it allows the researcher to adjust for the psychological effects of receiving medical attention.
• C)the use of the placebo can help avoid confounding.
• D)All of the answer options are correct.

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Definitions:

Total Variable Overhead Variance

Total variable overhead variance is the difference between the actual variable overhead costs incurred and the expected costs based on a standard cost model, indicating inefficiencies in production.

Variable Manuf. Overhead

Costs that vary with the level of production output and are related to the manufacturing process but cannot be directly traced to individual units produced.

Direct Materials

Raw materials that are directly incorporated into a finished product and are easily traceable to it.

Labour Rate Variance

The difference between the actual labor costs incurred and the standard labor costs for the actual production level.