Based on a Survey of 400 Students in a University

question 156

Multiple Choice

Based on a survey of 400 students in a university in which 20 percent indicated that they were business majors. The university student newspaper reported that "20 percent of all the students at the university are business majors." This report is an example of:

• A) a sample.
• B) a population.
• C) statistical inference.
• D) descriptive statistics.

Identify and describe different types of symbiotic relationships: mutualism, commensalism, and parasitism.

Distinguish between primary and secondary succession and the factors influencing each.

Recognize the impact of biotic and abiotic factors on population dynamics and community structure.

Understand the role of species interactions (like competition, predation) in shaping ecological communities.