You Conduct a Study on a Group of Individuals to Examine

question 78

Multiple Choice

You conduct a study on a group of individuals to examine the role of exercise in alleviating depression.You assign the first 50 people who are motivated to sign up to the experimental group,and the second group of 50 people,who sign up much later,to the control group.After one month,you find that the people in the experimental group (who exercised three times a week on average) are significantly less depressed than the people in the control group (who exercised once a week on average) .Although you may be tempted to conclude that exercise helps stave off depression,you cannot because of the lack of _____ in your study.

• A)random sampling
• B)random assignment
• C)random surveying
• D)random control

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Definitions:

Predetermined Overhead Rate

It's a rate used to allocate manufacturing overhead based on a particular activity (like labor hours or machine hours).

Manufacturing Overhead

Indirect costs associated with manufacturing, including expenses related to operating the factory like utilities, depreciation, and maintenance.

Machine-Hours

A metric indicating the cumulative operational duration of machinery within a specified time frame, often utilized in calculating overhead rates.

Predetermined Overhead Rate

A rate calculated before the period begins by dividing the estimated total overhead costs by an estimated allocation base, used to assign overhead costs to products or job orders.