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Assume I give a test with a mean score of 84 and a standard deviation of...

Assume I give a test with a mean score of 84 and a standard deviation of 10. Draw a sketch of a normal distribution centered at the mean of 84 and divide it into 5 regions based on the following grades: The top 10% of scores receive an A The next 20% of scores receive a B The middle 40% of scores receive a C The next 20% of scores receive a D The bottom 10% of scores receive an F

What are the minimum scores on the test that would give a student a A,B,C,D

Math   Statistics-And-Probability   
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