Which of the Following Represents a Double-Blind Study

question 22

Multiple Choice

Which of the following represents a double-blind study?

• A)The test group knows whether they are receiving a placebo or the actual treatment, and so do the researchers.
• B)The test group does not know whether they are receiving a placebo or the actual treatment, but the researchers do.
• C)The test group knows whether they are receiving a placebo or the actual treatment, but the researchers do not know until all the data are collected.
• D)Neither the test group nor the researchers know whether the test group is receiving a placebo or the actual treatment until all the data are collected.

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Definitions:

Prepaid Freight

Costs paid by a shipper in advance for shipment of goods, indicating that the sender bears the freight charges.

Cash Discount

A reduction in the invoice price offered to buyers as an incentive for early payment.

Wholesalers

Companies that sell merchandise to other businesses rather than to the public.

Credit Terms

Terms for payment on account by the buyer to the seller.