A Random Sample of 25 Students Selected from the Student

question 84

Multiple Choice

A random sample of 25 students selected from the student body of a large university had an average age of 25 years and a standard deviation of 2 years. We want to determine if the average age of all the students at the university is significantly more than 24. Assume the distribution of the population of ages is normal. Using α = .05, it can be concluded that the population mean age is

• A) not significantly different from 24.
• B) significantly different from 24.
• C) significantly less than 24.
• D) significantly more than 24.

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Definitions:

Maturational Processes

Biological or physiological developments that follow a predetermined sequence over an individual's life.

Heredity

The passing of genetic traits from parents to offspring through the genes.

Continuous And Discontinuous

Concepts in developmental psychology representing two different views of how change occurs; continuous implying gradual, cumulative change, and discontinuous suggesting distinct stages of development.

Childhood

The period of a human's life from birth to puberty, characterized by growth, development, and learning.