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Mathematics 13 Online
OpenStudy (anonymous):

The numbers of pages in the books in a library follow a normal distribution. If the mean number of pages is 180 and the standard deviation is 30 pages, what can you conclude? About 60% of the books have fewer than 150 pages. About 16% of the books have fewer than 150 pages. About 95% of the books have more than 150 pages. About 16% of the books have more than 150 pages

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