The study is a completely randomized design with a double-blind approach and includes a control group with placebo for comparison.
Experimental Design Type:
The experimental design described in the question is a completely randomized design. In this type of design, subjects are randomly assigned to different treatment groups to eliminate bias and ensure the validity of the results.
Blinding in the Experiment:
To implement blinding in this experiment, the appropriate approach would be to conduct a double-blind study. This involves ensuring that both the subjects and the researchers giving the treatments are unaware of which treatment each subject is receiving to reduce bias.
Control Group and Placebo:
In this study, the control group receives a placebo treatment to serve as a comparison against the groups receiving different levels of green tea, helping researchers assess the true effects of green tea consumption on LDL cholesterol levels.
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