A Study Was Designed to Investigate the Effects of Two

question 168

Multiple Choice

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 470 with a standard deviation of 20 on a standardized test. Assuming no information concerning the shape of the distribution is known, what percentage of the students scored between 430 and 510?

• A) at least 89%
• B) at least 75%
• C) approximately 68%
• D) approximately 95%

---

Definitions:

Abolish Inequalities

Efforts aimed at eliminating disparities in wealth, status, and power among different groups in society.

Fair Bargaining

Negotiation practices that are just, equitable, and transparent, ensuring all parties involved have their interests fairly represented and respected.

Political Process

The methods and actions used to create and implement public policy within a political system.

Distributed Widely

The act of disseminating or spreading something, such as information or resources, across a broad area or among a large number of people.