SOLUTION: 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?

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Question 992770:
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.

Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website!
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?
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Note:: 150 is 1 standard deviation below the mean.
150 has a left tail of approximately (50-34)= 16%
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Therefore::
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Ans:: About 16% of the books have fewer than 150 pages.
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Cheers,
Stan H.
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