Answer:
Simple random sampling
Explanation:
In simple random sampling, every member of the population has the same chances of being selected. Every member is picked by chance.
A small random sample is one where a sample of subjects are used to study a bigger population. The chosen samples are to be used as a representation of a whole population which is the sampling frame.
Answer: the problem is called sleep apnea. To treat sleep apnea, a continuous positive airway pressure device is used
Explanation:
The treatment of choice for obstructive sleep apnea is continuous positive airway pressure device (CPAP). CPAP is a mask that fits over the nose and/or mouth, and gently blows air into the airway to help keep it open during sleep.
The largest category of primary malignant brain tumors that arise from cells in the CNS are called <u>Gliomas</u>
A malignant brain tumor is a rapidly developing malignancy that can spread to the spine and other parts of the brain. According to their growth rate and propensity to recur after therapy, brain tumors are often rated from 1 to 4 based on their behavior. Grade 3 or 4 tumors are classified as malignant brain tumors, whereas grade 1 or 2 tumors are typically classified as benign or non-cancerous.
The majority of malignant brain tumors are secondary malignancies, meaning they first developed in another area of the body before spreading to the brain. Brain-originating tumors, or primary brain tumors, are those.
To know more about malignant brain tumors
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Answer:
<em>Primary sources are firsthand, contemporary accounts of events created by individuals during that period of time or several years later (such as correspondence, diaries, memoirs and personal histories). These original records can be found in several media such as print, artwork, and audio and visual recording. Examples of primary sources include manuscripts, newspapers, speeches, cartoons, photographs, video, and artifacts. Primary sources can be described as those sources that are closest to the origin of the information. They contain raw information and thus, must be interpreted by researchers.</em>
<em>Primary sources are firsthand, contemporary accounts of events created by individuals during that period of time or several years later (such as correspondence, diaries, memoirs and personal histories). These original records can be found in several media such as print, artwork, and audio and visual recording. Examples of primary sources include manuscripts, newspapers, speeches, cartoons, photographs, video, and artifacts. Primary sources can be described as those sources that are closest to the origin of the information. They contain raw information and thus, must be interpreted by researchers.Secondary sources are closely related to primary sources and often interpret them. These sources are documents that relate to information that originated elsewhere. Secondary sources often use generalizations, analysis, interpretation, and synthesis of primary sources. Examples of secondary sources include textbooks, articles, and reference books.</em>
