Out of a sample of 80 books, 6 were historical books. So the percentage of books in the sample will be:
%
We can use this sample to represent the entire collection of books in the library. So the best estimate of total number of historical books in the library is 7.5% of 21360 , which comes out to be:
7.5 % of 21360 =
Therefore, roughly 1602 books out of 21360 book of library are historical books.
Answer:
Slope = 6
Step-by-step explanation:
Slope =
The numbers are 0.85 and 0.15