In Exercises 33–36, identify which of these designs is most ap...

Question

In Exercises 33–36, identify which of these designs is most appropriate for the given experiment: completely randomized design, randomized block design, or matched pairs design.

Lunesta Lunesta is a drug designed to treat insomnia. In a clinical trial of Lunesta, amounts of sleep each night are measured before and after subjects have been treated with the drug.

Accepted Answer

Hello, everyone. Let's take a look at this question together. Which of these designs is most suitable for the given experiment, where the experiment is a blood pressure medication study where a new drug is being tested to lower blood pressure. In a clinical trial, the blood pressure of each participant is measured before and after taking the medication. And we want to know, is it answer choice A, a completely randomized design? Answer choice B, a randomized block design, answer choice C, a matched pairs design, or answer choice D, none of these. And we can recall that answer choice A, a completely randomized design, is a type of experimental design where subjects are randomly assigned to treatment. Groups. Next we have answer choice B, which is a randomized block design, which we can recall that a randomized block design is a type of experimental design where subjects are divided into blocks based on characteristics before random assignment. And lastly, we have answer choice C, which is a matched pairs design, which we know that a matched pair's design is a type of experimental design where each subject is measured before and after treatment, or paired with. A similar subject. So looking at the given experiment where a new drug is being tested to lower blood pressure, we know that the blood pressure of each participant is measured before and after taking the medication. So in this study, each participant's blood pressure is measured before and after treatment, and the study involves comparing the same individuals before and after taking the medication. And since this experiment involves comparing the same individuals before and after taking the medication, we can identify that the type of experimental design. That is most suitable for this given experiment is the matched pair's design, as the matched pair's design involves each subject being measured before and after treatment. So answer choice C matched pair's design is the correct answer, and all other answer choices are incorrect. I hope you found this video to be helpful. Thank you and goodbye.

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Key Concepts

Completely Randomized Design

Randomized Block Design

Matched Pairs Design

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