*86. Each new book donated to a library must be processed. Suppose that the time it takes...

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*86. Each new book donated to a library must be processed. Suppose that the time it takes a librarian to process a book has mean 10 minutes and standard deviation 3 minutes. If a librarian has 40 books that must be processed one at a time,

(a) approximate the probability that it will take more than 420 minutes to process all these books;

(b) approximate the probability that at least 25 books will be processed in the first 240 minutes.

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Introduction To Probability Models

ISBN: 9780128143469

12th Edition

Authors: Sheldon M Ross

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Question Posted: Sep 19, 2024 02:22 PM

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*86. Each new book donated to a library must be processed. Suppose that the time it takes...

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Introduction To Probability Models

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