Scores on a University Exam Are Normally Distributed, with a Mean

question 27

Multiple Choice

Scores on a university exam are Normally distributed, with a mean of 78 and a standard deviation of 8. The professor teaching the class declares that a score of 70 or higher is required for a grade of at least C. Using the 68-95-99.7 rule, what percent of students score below 62?

• A)2.5%
• B)5%
• C)16%
• D)32%

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