Suppose You Want to Estimate the Average Number of Courses

question 36

Multiple Choice

Suppose you want to estimate the average number of courses that students at your school take in the natural sciences. The registrar provides a complete list of student names, along with each student's campus or local address, class year, and major. Assuming that you can only select 100 students, your best estimate would probably come from a

• A) simple random sample.
• B) systematic sample.
• C) stratified random sample, stratifying on student major.
• D) cluster sample, with student residence halls serving as the clusters.
• E) quota sample, with twenty-five students selected from each class.

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Definitions:

Essential Nutrients

Nutrients that cannot be synthesized by the body and must be obtained from the diet, including certain amino acids, fatty acids, vitamins, and minerals.

Kilocalories

A unit of energy measurement in nutrition, commonly called a calorie, equivalent to 1000 small calories.

Energy Content

The amount of energy stored in a substance or system, which can be released or utilized through various processes.

Lipid

Substance composed principally of carbon, oxygen, and hydrogen; contains a lower ratio of oxygen to carbon and is less polar than carbohydrates; generally soluble in nonpolar solvents.