Question

a pharmaceutical company manufactures medicine to reduce pain caused by migraine headaches. the company is investigating whether a new medicine is more effective in reducing pain than the current medicine. a random sample of 500 participants who experience migraines was selected, and the participants were randomly assigned to one of two groups of equal size. the first group received the current medicine and the second group received the new medicine. when a participant experienced a migraine, he or she was instructed to take the medicine and, 15 minutes after taking the medicine, to rate the pain relief on a scale from 1 to 10, with 1 being no relief to 10 being complete relief. at the end of six months, the average pain relief for each participant was calculated. which of the following is the best description of the study?

Answer 1

The experiment employs a completely random design.

The random selection of sample participants to derive conclusions and assumptions about an entire population is known as probability or random sampling.

A random sample of 500 participants was chosen, and they were randomly assigned to one of two groups of equal size. As a result, the best description of the study is an experiment with a completely randomised design because there is no pattern in assigning the medicine and there was a simple random division from the total group, with no other specific characteristic.

As a result, the experiment employs a completely randomised design.

To learn more about random sampling refer here

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