Voters Have Recently Decided to Have Fluoride Added to the City

question 6

Multiple Choice

Voters have recently decided to have fluoride added to the city water system. Epidemiologists now want to study the effect of fluoride on dental caries in this population. Which of the following would be conducted by the epidemiologists?

• A) Ecological study
• B) Double-blind study
• C) Community trial
• D) Screening

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Definitions:

Sales

The total amount of goods or services sold within a specific time frame, indicating the performance and growth of a business.

Operating Cycle

The duration from the acquisition of supplies for production to the collection of payment from the sale of goods, indicating the company's efficiency in managing its inventory and receivables.

COGS

Cost of Goods Sold; the direct costs attributable to the production of the goods sold by a company.

Operating Cycle

The duration between the acquisition of inventory and the collection of cash from receivable accounts in a company's business process.