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Unformatted text preview: b) The standard deviation for the students that took the red exam says that 2/3 of the students scored between 27% and 51%. c) The student has most likely taken the red exam . This is because the score of 20% is closer to the median of the students who took the red exam. Also, if you go two standard deviations away from the mean, which accounts for 95% of the data, you will see that the red exams lower extreme is 15% while the blue exams lower extreme is 23%. This makes it very unlikely for the student to have taken the blue exam....
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- Spring '07