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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Statistics For Management And Economics Abbreviated

ISBN: 9781285869643

10th Edition

Authors: Gerald Keller

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Question Posted: Feb 03, 2015 08:43 AM

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The marks on a statistics midterm test are normally distributed with a mean of 78 and a

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