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djyliett [7]
3 years ago
12

Which type of research study is set up so that neither subjects nor investigators know which is the active group and which is re

ceiving a placebo?
a. Double blind
b. Clinical trial
c. Case control
d. Epidemiological
English
2 answers:
mojhsa [17]3 years ago
5 0
A) Double blind is the research study set up so that neither subjects nor investigators know which is the active group and which is receiving a placebo. 
Vladimir [108]3 years ago
5 0
The best answer to the question above would be letter a. A type of research study set up so that neither subjects nor investigators know which is the active group and which is receiving a placebo is a double blind type of research method.
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Travka [436]

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Explanation:

Any sentence with if at the beginning is usually present tense.

Commas always go after "What a pity".

I also did not see periods at the end of both sentences.

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Read this excerpt from White Fang.
tatuchka [14]

Answer:

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2 years ago
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Snezhnost [94]

Answer:

B rewarded

Explanation:

In order for something to be considered democratic, the people involved in the events must have voted for it. I doubt that people in South Korea actually had a voting referendum to decide whether to hold the Winter Olympics or not.

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5 0
3 years ago
“After studying, Derek not only got an A on the test,”
Tema [17]
What’s the question..?
5 0
3 years ago
 in a book you read, what can one generation learn from another? and write 5 sentences about it
Ilia_Sergeevich [38]

Answer:

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Explanation:

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