Researchers at the University of Witwatersrand want to know if the vaccine for COVID-19 will prevent the contraction of

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answerhappygod
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Researchers at the University of Witwatersrand want to know if the vaccine for COVID-19 will prevent the contraction of

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Researchers at the University of Witwatersrand want to know if
the vaccine for COVID-19 will prevent the contraction of the virus.
They divide participants into group A and group B. Participants in
group A gets the vaccine and participants in group B gets a
placebo. This is an example of:
Group of answer choices
Qualitative, Descriptive research Quantitative,
Descriptive research Quantitative,
Correlation research Quantitative,
Experimental research
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