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StatisticsQ&A LibraryTextbook Revision. Textbook publishers must estimate the sales of new (first-edition) books. The records of one major publishing company indicate that 10% of all new books sell more than projected, 30% sell close to the number projected, and 60% sell less than projected. Of those that sell more than projected, 70% are revised for a second edition, as are 50%of those that sell close to the number projected and 20% of those that sell less than projected.a. What percentage of books published by this publishing company go to a second edition?b. What percentage of books published by this publishing company that go to a second edition sold less than projected in their first edition?Question

Asked Jan 9, 2020

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**Textbook Revision.** Textbook publishers must estimate the sales of new (first-edition) books. The records of one major publishing company indicate that 10% of all new books sell more than projected, 30% sell close to the number projected, and 60% sell less than projected. Of those that sell more than projected, 70% are revised for a second edition, as are 50%

of those that sell close to the number projected and 20% of those that sell less than projected.

a. What percentage of books published by this publishing company go to a second edition?

b. What percentage of books published by this publishing company that go to a second edition sold less than projected in their first edition?

Step 1

**a).**

*Rule of probability:*

The events *A1, A2,…, Ak* are mutually exclusive and exhaustive. Then the proba...

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