Question identify each of the following studies as a survey, Ask an Expert

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Question: Identify each of the following studies as a survey, an experiment, an observational study, or a case study. Explain your reasoning.

a. A doctor claims to be able to cure migraine headaches. A researcher administers a questionnaire to each of the patients the doctor claims to have cured.

b. Patients who visit a clinic to help them stop smoking are given a choice of two treatments: undergoing hypnosis or applying nicotine patches. The percentages who quit are compared for the two methods.

c. A large company wants to compare two incentive plans for increasing sales. The company randomly assigns a number of its sales staff to receive each kind of incentive and compares the average change in sales of the employees under the two plans.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M92580179

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