Math
2500 students take a college entrance exam. The scores on the exam have an approximate normal distribution with mean u = 52 points and a standard deviation o = 11 points. Estimate the percentage of students scoring 52 points or more.
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How would you do this?
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Answers
To estimate the percentage of students scoring 52 points or more, you can use the 68-95-99.7 rule or the z-score table. To do this, you first need to calculate the z-score for the score of 52 points, which is (52-u)/o = (52-52)/11 = 0.
Using the z-score table, you can look up the probability of a z-score of 0, which is 0.50. This means that half of the students will score 52 points or more. Thus, the percentage of students scoring 52 points or more is 50%.
