A researcher is testing the effect of a new drug on sleep

Last updated: 4/19/2023

A researcher is testing the effect of a new drug on sleep quality in patients with insomnia She randomly assigns patients to receive either the new drug or a placebo Both the new drug and placebo are pills that look the same Patients do not know if they receive the new drug or placebo but the doctor does know what each patient receives What type of study is this O Anecdote O Observational study O Experiment