In Problems 27-30 suppose that, for a certain exam, a teacher grades on a curve. It is
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In Problems 27-30 suppose that, for a certain exam, a teacher grades on a curve. It is known that the mean is 50 and the standard deviation is 5.
There are 45 students in the class.
a. How many students should receive a C?
b. How many students should receive an A?
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