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Title: Which of the following is an example of a natural experiment? Post by: AndrewKraus on May 22, 2017 Which of the following is an example of a natural experiment?
A) A laboratory research on the effectiveness of solar power as an alternative source of fuel B) A research on the effectiveness of a new medicine among some voluntary participants C) A research on the effect of air pollution on lung disorders by observing the health conditions of people who stay close to industrial areas and those who stay away from industries D) A study on the benefits of regular exercise by paying for the membership fees at fitness clubs for one-half of the participants Title: Re: Which of the following is an example of a natural experiment? Post by: Sudzbury on May 22, 2017 Content hidden
Title: Re: Which of the following is an example of a natural experiment? Post by: AndrewKraus on Jun 24, 2017 I'll share this with my friends, thank you for being there
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