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(Solved): 4000 students take a college entrance exam. The scores on the exam have an approximately normal dis ...




4000 students take a college entrance exam. The scores on the exam have an approximately normal distribution with mean \( \mu
4000 students take a college entrance exam. The scores on the exam have an approximately normal distribution with mean \( \mu=65 \) points and standard deviation \( \sigma=9 \) points. Use the 68-95-99.7 rule to complete the following. (a) Estimate the percentage of students scoring between 47 and 83 points. (b) Estimate the percentage of students scoring 65 points or more. (c) Estimate the percentage of students scoring 83 points or more. (a) Approximately \( \% \) of the students score between 47 and 83 points. (Type an integer or a decimal.)


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It is given that, Mean(?)=65 Standard deviation (?)=9 Abo
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