In Exercises 9–12, determine whether the sampling method appea...

Question

In Exercises 9–12, determine whether the sampling method appears to be sound or is flawed.

Clinical Trials Researchers at Yale University conduct a wide variety of clinical trials by using subjects who volunteer after reading advertisements soliciting paid volunteers.

Accepted Answer

Hello, everyone. Let's take a look at this question together. Determine whether the sampling method appears to be sound or is flawed. Give a reason. And it says that researchers at a major hospital conduct a clinical trial to test a new pain relief drug. They select participants by posting flyers in the hospital and on social media asking for volunteers. And we want to know, is it answer choice A, the sampling method is sound because participants are recruited from multiple sources, ensuring diversity. Answer choice B, the sampling method is flawed due to voluntary response bias as participants self-select into the study. Answer choice C. The sampling method is sound because hospital patients are the best group to test a pain relief drug, or answer choice D, the sampling method is flawed because it does not include an equal number of people from all age groups. So in order to solve this question, we have to understand the sampling method that is used and determine if it is sound or flawed. Well, from the information provided in the question, we know that researchers are at a major hospital conducting a clinical trial to test a new pain relief drug where they select participants by posting flyers in the hospital and on social media asking for volunteers. Therefore, the participants are recruited through flyers and social media, which tells. us that only those who actively choose to participate in this survey will be included. And since only people who choose to be included in the survey, that tells us that the sampling method is flawed, as the self-selection process can lead to a non-representative sample, as individuals who feel strongly are more likely to volunteer. So looking at our answer choices, we can identify answer choice B as the correct answer. As we know that the sampling method is flawed due to voluntary response bias, since the participants self-select into the study, and all other answer choices are incorrect. I hope you found this video to be helpful. Thank you and goodbye.

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In Exercises 9–12, determine whether the sampling method appears to be sound or is flawed.

Clinical Trials Researchers at Yale University conduct a wide variety of clinical trials by using subjects who volunteer after reading advertisements soliciting paid volunteers.

Key Concepts

Sampling Method

Volunteer Bias

Representativeness

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In Exercises 9–12, determine whether the sampling method appears to be sound or is flawed.Clinical Trials Researchers at Yale University conduct a wide variety of clinical trials by using subjects who volunteer after reading advertisements soliciting paid volunteers.