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Biology, 15.09.2019 01:10 24wilsleaann
Which part of an investigation is only found in an experimental investigation? a hypothesis a control group a procedure a conclusion
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In an experiment examining the effects tai chi on arthritis pain, callahan (2010) selected a large sample of individuals with doctor-diagnosed arthritis. half of the participants immediately began a tai chi course and the other half (the control group) waited 8 weeks before beginning. at the end of 8 weeks, the individuals who had experienced tai chi had less arthritis pain that those who had not participated in the course.
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Which part of an investigation is only found in an experimental investigation? a hypothesis a contr...
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