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 260 with a standard deviation of 30 on a standardized test. Assuming a mound-shaped and symmetric distribution, what percentage of scores exceeded 200?
A) approximately 97.5%
B) approximately 95%
C) approximately 100%
D) approximately 84%
Correct Answer:
Verified
Correct Answer:
Verified
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