Exhibit 11-1 Last Year, the Standard Deviation of the Ages of the of the Students

question 8

Multiple Choice

Exhibit 11-1
Last year, the standard deviation of the ages of the students at UA was 1.8 years. Recently, a sample of 61 students had a standard deviation of 2.1 years. We are interested in testing to see if there has been a significant change in the standard deviation of the ages of the students at UA.
-Refer to Exhibit 11-1. The test statistic is

• A)44.08
• B)79.08
• C)81.67
• D)3.24

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Definitions:

Math and Science

Academic disciplines focusing on numbers, quantities, measurements, and the natural behavior of physical objects.

ADHD

Attention Deficit Hyperactivity Disorder, a neurodevelopmental disorder characterized by patterns of inattention, hyperactivity, and impulsivity.

Characteristics

Attributes, traits, or qualities that are distinctive to an individual, object, or category.

Junior High School

An educational institution for children typically in grades 7 through 9, serving as a transition from elementary school to high school.