Question
Scores on a Math exam were normally distributed with a mean of 67% and a standard deviation of 8.Use this information to determine the following:
Scores on a Math exam were normally distributed with a mean of 67% and a standard deviation of 8.Use this information to determine the following:
About what percent of exams were below 75%?
About what percent of the exam scores were above 83%?
A failing grade on the exam was anything 2 or more standard deviations below the mean.What was the cutoff for a failing score?Approximately what percent of the students failed?
About what percent of the students were below a 80%?
What percent of the students scored at least a 63% and at most a 83%?
What percent of the students scored at least a 60% and at most a 72%?
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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
