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twenty per cent of library books in the fiction section are worn and need replacement,. Ten...

twenty per cent of library books in the fiction section are worn and need replacement,. Ten percent of the nonfiction holdings are worn and need replacement. The library holdings are 40% fiction and 60% nonfiction books. Use a tree diagram to find the probabiliity that a book choesn at random from this library is worn and needs replacement.

math   Statistics-And-Probability   
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Answer #1

worn and need replacement 0.08 0.2 Fiction t no 0.4 0.8 0.32 library books worn and need replacement 0.06 0.1 0.6 Non Not wor

P(book chosen is worn and needs replacement) = 0.08 + 0.06 = 0.14

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