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# (Solved): 3500 students take a college entrance exam. The scores on the exam have an approximately normal dis ...

3500 students take a college entrance exam. The scores on the exam have an approximately normal distribution with mean $$\mu=52$$ points and standard deviation $$\sigma=11$$ points. Use the 68-95-99.7 rule to complete the following. (a) Estimate the average score on the exam. (b) Estimate the percentage of students scoring 52 points or less. (c) Estimate the percentage of students scoring between 30 and 74 points. (d) Estimate the percentage of students scoring 30 points or less. (a) The average score on the exam is approximately points.

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given that mean ?=52 standard deviation ?=11 sample size n=3,500 a) The average score is ?=52 b) The percentage of students scoring 52 p
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