Which of the following two scenarios is an observational study and which one is

Question

Which of the following two scenarios is an observational study and which one is an experiment? a. 2. The Pew Research Center wanted to know the percentage of people who go online wirelessly. They surveyed 2000 adults in the United States and found that 59% of them go online wirelessly A researcher wishes to study the effect of room temperature on the performance of a particular task. Three temperature levels (low, medium, and high) are chosen for the study. 1000 college students are selected to perform the task under different temperature level the time of completing the task is recorded for each individual and compared b.

Explanation / Answer

Solution

a) It's an observational study as it describes some situation

b) Experiment as it's looking whether effect of room temperature that is treatment causes a change in performance

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