Mathematics, 27.01.2020 03:31 drey10
To research the claim that green tea lowers ldl (so-called bad) cholesterol, you ask a random sample of individuals to divulge whether they are regular green tea users or not. you also obtain their ldl cholesterol levels. finally, you compare the ldl cholesterol levels of the green tea drinkers to those of the non-green tea drinkers. explain why this is an observational study.
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To research the claim that green tea lowers ldl (so-called bad) cholesterol, you ask a random sample...
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