The marks on a statistics midterm test are normally distributed with a mean of 78 and a
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The marks on a statistics midterm test are normally distributed with a mean of 78 and a standard deviation of 6.
a. What proportion of the class has a midterm mark of less than 75?
b. What is the probability that a class of 50 has an average midterm mark that is less than 75?
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Related Book For
Statistics For Management And Economics Abbreviated
ISBN: 9781285869643
10th Edition
Authors: Gerald Keller
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