IMathAS-libretexts

1.30 Stressed out, Part II: In a study evaluating the relationship between stress and muscle cramps, half the subjects are randomly assigned to be exposed to increased stress by being placed into an elevator that falls rapidly and stops abruptly and the other half are left at no or baseline stress.

a) What type of study is this?

experiment
observational study

b) Can this study be used to conclude a causal relationship between increased stress and muscle cramps?

Yes, this is an observational study which can infer causation.
Yes, this is an experiement which can infer causation.
No, this is an observation study which cannot infer causation.
No, this is an experiment which cannot infer causation.

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