Stratified Random Sampling Is a Method of Selecting a Sample

question 61

Multiple Choice

Stratified random sampling is a method of selecting a sample in which

• A)the sample is first divided into strata, and then random samples are taken from each stratum
• B)various strata are selected from the sample
• C)the population is first divided into strata, and then random samples are drawn from each stratum
• D)None of these alternatives is correct.

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Definitions:

Intestinal Phase

A phase of gastric secretion that begins when food enters the small intestine, triggering hormones that influence digestive processes.

Duodenal Gland

Small gland that opens into the base of intestinal glands; secretes a mucoid alkaline substance.

Duodenal Mucosa

The lining of the duodenum, which contains cells responsible for the secretion of enzymes necessary for digestion.

Acidic Chyme

The partially digested, acidic food that passes from the stomach to the small intestine.