Determine whether the study depicts an observational study or an experiment.a) A medical researcher obtains a sample of adults suffering from diabetes. She randomly assigns 95 people to atreatment group and 95 to a placebo group. The treatment group receives a medication over a period of three months and the placebo group receives a placebo over the same time frame. At the end of three months the patients' symptoms are evaluated. Explain.b) A researcher obtained a random sample of 100 smokers and a random sample of 100 nonsmokers. After the 200 participants answered 10 unbiased questions on a computer the researcher compared the rate of depression among the smokers with the rate of depression among nonsmokers. Explain
Determine whether the study depicts an observational study or an experiment.
a) A medical researcher obtains a sample of adults suffering from diabetes. She randomly assigns 95 people to a
treatment group and 95 to a placebo group. The treatment group receives a medication over a period of three months and the placebo group receives a placebo over the same time frame. At the end of three months the patients' symptoms are evaluated. Explain.
b) A researcher obtained a random sample of 100 smokers and a random sample of 100 nonsmokers. After the 200 participants answered 10 unbiased questions on a computer the researcher compared the rate of depression among the smokers with the rate of depression among nonsmokers. Explain
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
