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Solved: Exam Scores An instructor gives a 100-point
Chapter 6, Problem 38(choose chapter or problem)
Exam Scores An instructor gives a 100-point examination in which the grades are normally distributed. The mean is 60 and the standard deviation is 10. If there are 5% As and 5% Fs, 15% Bs and 15% Ds, and 60% Cs, find the scores that divide the distribution into those categories.
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QUESTION:
Exam Scores An instructor gives a 100-point examination in which the grades are normally distributed. The mean is 60 and the standard deviation is 10. If there are 5% As and 5% Fs, 15% Bs and 15% Ds, and 60% Cs, find the scores that divide the distribution into those categories.
ANSWER:Step 1 of 3
Given:
The bottom get an , the upper cuttoff value for is at , the upper cuttoff value for is at , the upper cuttoff value for B is at .