A study was designed to investigate the effects of two variables-(1)a student's level of mathematical anety and 2 teaching method on a students achievement in a mathematics course. Sudents who had a low level of mathematcal anety were taught usint the tradtonal expository method. These students obtained a mean score of 380 with a standard devaion of 20 on a standardied test. Assumingg a bell shaped distribution where would approximately 95 of the students score

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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 mathermatics course. Students who had a low level of mathematical anety were taught using the tradtional expository method.
These students obtained a mean score of 30 witha standard devation of 20 on a standardized test. Assuming a bell shaped distribution where would
approximately 9SN of the students score?
O below 340 or above 420
O between 340 and 420
O below 320 or above 440
O between 320 and 440
Transcribed Image Text: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 mathermatics course. Students who had a low level of mathematical anety were taught using the tradtional expository method. These students obtained a mean score of 30 witha standard devation of 20 on a standardized test. Assuming a bell shaped distribution where would approximately 9SN of the students score? O below 340 or above 420 O between 340 and 420 O below 320 or above 440 O between 320 and 440
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