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Mr. Phillips is a librarian at Westside Library. In examining a random sample of the library's book collection, he found the following.
902 books had no damage,
88 books had minor damage, and
35 books had major damage.
Based on this sample, how many of the 76,500 books in the collection should Mr. Phillips expect to have no damage? Round your answer to the nearest whole number. Do not round any intermediate calculations.

Mr. Phillips is a librarian at Westside Library. In examining a random sample of the library's book collection, he found the following.\newline902902 books had no damage,\newline8888 books had minor damage, and\newline3535 books had major damage.\newlineBased on this sample, how many of the 7676,500500 books in the collection should Mr. Phillips expect to have no damage? Round your answer to the nearest whole number. Do not round any intermediate calculations.

Full solution

Q. Mr. Phillips is a librarian at Westside Library. In examining a random sample of the library's book collection, he found the following.\newline902902 books had no damage,\newline8888 books had minor damage, and\newline3535 books had major damage.\newlineBased on this sample, how many of the 7676,500500 books in the collection should Mr. Phillips expect to have no damage? Round your answer to the nearest whole number. Do not round any intermediate calculations.
  1. Calculate Total Books: Calculate the total number of books sampled and the proportion of undamaged books.\newlineTotal books sampled = 902902 (undamaged) + 8888 (minor damage) + 3535 (major damage) = 10251025.\newlineProportion of undamaged books = 9021025.\frac{902}{1025}.
  2. Estimate Undamaged Books: Apply the proportion of undamaged books to the total collection to estimate the number of undamaged books.\newlineExpected undamaged books in total collection = (902/1025)76,500(902 / 1025) * 76,500.
  3. Find Expected Number: Perform the calculation to find the expected number of undamaged books.\newlineExpected undamaged books = (902/1025)76,50067,073.17(902 / 1025) * 76,500 \approx 67,073.17.\newlineRound to nearest whole number: 67,07367,073.

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