Use the Empirical Rule to Describe Data That Are Bell $68 \%$

question 106

Multiple Choice

Use the Empirical Rule to Describe Data That Are Bell Shaped
-A study was designed to investigate the effects of two variables - (1) a student's level of mathematical anxiety and (2) teaching method - on a student's achievement in a mathematics course. Students who had a low level of mathematical anxiety were taught using the traditional expository method. These students obtained a mean score of 490 with a standard deviation of 20 on a standardized test. Assuming a bell-shaped distribution, where would approximately $68 \%$ of the students score?

• A) between 470 and 510
• B) between 450 and 530
• C) below 450 or above 530
• D) below 470 or above 510

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Definitions:

Three Parts

A reference to a structure or composition that is divided into three distinct sections or elements.

Avoid "Uptalk"

The practice of not ending sentences with a rising intonation, which can make statements sound like questions and affect perceived confidence.

Appear Weak

To give an impression of lacking strength, confidence, or effectiveness, potentially undermining one's position or argument.

Computer-Generated Voice

Synthetic voice produced by computer software, often used in virtual assistants, navigation systems, and accessibility tools for the visually impaired.