A Study Was Designed to Investigate the Effects of Two

question 38

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 350 with a standard deviation of 40 on a standardized test. Assuming a mound-shaped and symmetric distribution, in what range would approximately 99.7% of the students score?

• A) between 230 and 470
• B) below 470
• C) above 470
• D) below 230 and above 470

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Definitions:

Experience

The knowledge or skill acquired by a period of practical involvement in an activity or exposure to events or situations.

Reflexive Response

An automatic, involuntary reaction to a stimulus, such as the knee-jerk reflex.

Unconditioned Response

An automatic, natural reaction to a stimulus that occurs without any prior learning or conditioning.

Stimulus

Anything that can trigger a physical or behavioral change.