observation study or experiment and explain 11) in a survey of 177237 US .aduIts
ID: 3020469 • Letter: O
Question
observation study or experiment and explain
11) in a survey of 177237 US .aduIts ,65% said they visited a dentist in the last 12 months
12) reserchers demonstrated in people at risk for increased cardiovascular disease that 2000 miligrams per day of acety-L-caenitine ober a 24 week period lowered blood pleasure and improved insulin resistance.
13) To study the affect of music in driving habits ,eight drivers ( four male and four female ) drove 500 miles while listening to diffrent genres of music .
14) To study predator -prey relationship in the Bering sea ,reserches looked at the feeding beheavior of three species :black -legged kittiwakes ,thick-billed murres ,and the northern fur seals
Explanation / Answer
11) in a survey of 177237 US .aduIts ,65% said they visited a dentist in the last 12 months
It is an observational study because there is no treatmet given to the subject and the study does not attempt to influence the responses of the subjects.
12)reserchers demonstrated in people at risk for increased cardiovascular disease that 2000 miligrams per day of acety-L-caenitine ober a 24 week period lowered blood pleasure and improved insulin resistance.
It is an experimental design because the study applies a treatment (2000 miligrams per day of acety-L-caenitine ober a 24 week period) to the subjects.
13)To study the affect of music in driving habits ,eight drivers ( four male and four female ) drove 500 miles while listening to diffrent genres of music .
It is an experimental design because the study applies a treatment (diffrent genres of music) to the subjects.
14)To study predator -prey relationship in the Bering sea ,reserches looked at the feeding beheavior of three species :black -legged kittiwakes ,thick-billed murres ,and the northern fur seals
It is an observational study because there is no treatmet given to the subject and the study does not attempt to influence the subjects. The reseacher only study the feeding beheavior of three species.
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