Question

Select the correct answer.

You are conducting a study on the health of people who have been exposed to radiation and those who have not been exposed to
radiation. Which of these methods of obtaining data should you most likely adopt and why?
A
an observational study because it involves the pre-existing condition of the subjects
an experimental study because it will give the most accurate results
OB
OC
an experimental study because results can be obtained much faster using this technique
D
a sample survey with only people who were not exposed to radiation because it involves random selection
O E.
a sample survey with only people who were exposed to radiation because it involves random selection

Answer 1

B.an experimental study because it will give the most accurate results

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Answer 2

An experimental study because it will give the most accurate results.

Explanation:

The observational study could also be somewhat useful, but the most accurate results will come from an experimental study. You will test the difference in DNA, blood pressure, and such. Whilst, the observational study, you only can observe the effects from the outside. The sample studies mean nothing because you can't test both sides of the complete study.