Mathematics, 24.10.2019 02:30 Ajaxr2432
At a local health club, a researcher samples 75 people whose primary exercise is cardiovascular and 75 people whose primary exercise is strength training. the researcher’s objective is to assess the affect of type of exercise on cholesterol. each subject reported to a clinic to have his or her cholesterol measured. the subjects were unaware of the purpose of the study, and the technician measuring the cholesterol was not aware of the subject’s type of exercise. this approach is
a)
an observational study.
b) an experiment, but not a double-blind experiment.
c) a double-blind experiment.
d)
fundamentally flawed because only a well-designed experiment with randomized assignment to treatments can be used to determine a cause-and-effect relationship.
Answers: 1
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Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?
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Reinel saves 30% of every pay check. his paycheck last week was 560$. how much did reniel save last week?
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At a local health club, a researcher samples 75 people whose primary exercise is cardiovascular and...
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