Random <u>selection </u>ensures that a sample is representative of the population. random <u>assignment </u>ensures that participant characteristics are equivalent across groups.
<h3>What is a representative sample?</h3>
Representative samples are little amounts or components that are a part of a bigger group or organization. It shares the same characteristics as the bigger population it represents.
Consider a company in Germany's Bavaria that is going to launch a new service or product. It would be difficult for the company to poll every Bavarian to determine how they felt about the launch. As an alternative, researchers can compile a small sample from various locations in Bavaria that will serve as a representative sample of the local populace. After that, a survey will be given to the respondents to gather their comments on the good or service. A "representative sample" is the term used to describe this selection of Bavarian individuals.
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Answer:
They developed many new techniques for buildings and invented, concrete,roman roads, arches, and aqueducts
Explanation:
Answer: the correct answer is <u>determining that the study has a maximization of benefits and a minimization of risks.</u>
Explanation: this principle is very similar to what is applied in the business world which is the maximization of profits and minimization of costs. In this case the maximization of profits is the maximization of benefits that the study can render and the minimization of risks is prevalent because we are dealing with human beings.
Juan has hypersomnolence, while Miguel has narcolepsy. both men have sleep-wake disorders.
sleep-wake disorder is a medical term used to describe a variety of conditions in which a person feels excessively tired or sleeps longer than normal. Some researchers classify hypersomnia as primary or secondary. Primary hypersomnia is an isolated neurological disorder of unknown cause.
sleep-wake disorders may be caused by another sleep disorder (such as narcolepsy or sleep apnea), a dysfunction of the autonomic nervous system, or drug or alcohol abuse. In some cases, it is caused by physical problems such as tumors, head injuries, and central nervous system injuries.
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