Last School Year, the Student Body of a Local University

question 47

Multiple Choice

Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors.A sample of 400 students taken from this year's student body showed the following number of students in each classification. ​ We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year.The expected frequency of seniors is

• A) 120.
• B) 96.
• C) 80.
• D) 74.

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Definitions:

Upward Mobility

The ability for individuals or groups to move to a higher social class or economic position.

Travers and Milgram

Researchers known for their social experiment in the 1960s which demonstrated the "small world phenomenon," illustrating how closely connected humans are through social networks.

Small World Problem

A concept in sociology that suggests most people are connected through a short chain of acquaintances, emphasizing the interconnectedness of social networks.

Union Membership

The state of being a member of an organization, known as a union, that represents the interests of workers in specific industries or workplaces.