Question
In: Statistics and Probability
A study was designed to investigate the effects of two variables, (1) a student's level of...
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 380 with a standard deviation of 50 on a standardized test. Assuming no information concerning the shape of the distribution is known, what percentage of the students scored between 280 and 480?
a) at least 75%
b) 88.9%
c) approximately 95%
d) approximately 68%
Solutions
orchestra answered 2 years agoRelated Solutions
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1
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