Question
A large group of students took a test in Physics and the final grades have a mean of 70 and a standard deviation of 10.
A large group of students took a test in Physics and the final grades have a mean of 70 and a standard deviation of 10. If we can approximate the distribution of these grades by a normal distribution, what percent of the students a) Scored higher than 90? b) Should pass the test with an A, B, or C (grades 70)? c) Should make a D or F (grades < 70)?
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Essentials of Business Analytics
Authors: Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson
2nd edition
1305627733, 978-1305861817, 1305861817, 978-0357688960, 978-1305627734
