Essay
Suppose the mean number of books in "County Libraries" is 10,000 and the standard deviation is 2,000. Assume the distribution is normal.
a. What proportion of the libraries have between 6,000 and 8,500 books?
b. How many books would a library have to have to be in the top 15 percent?
c. Defend or attack the assumption that the distribution of books in "County Libraries" is normal.
Correct Answer:
Verified
a. z = 2.00; proportion = .4772
z = 0.75...View Answer
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Correct Answer:
Verified
z = 0.75...
View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
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