A Study Was Designed to Investigate the Effects of Two

question 6

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 440 with a standard deviation of 50 on a standardized test. Assuming a mound-shaped and symmetric distribution, in what range would approximately 68% of the students score?

• A) above 490
• B) between 390 and 490
• C) below 390 and above 490
• D) below 490

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