7. From a collection of 10 math, 5 chemistry, and 15 physics books a book is selected at random. If it is not a math book, what is the probability it is a chemistry book? 8. Textbook publishers estimate that there is a 10% chance that a new book will sell more than projected, a 30% chance that it will sell close to projected, and a 60% chance that it will sell less than projected. Of the new books that sell more than projected, 70% are revised for a second edition, as are 50% of those that sell close to projected, and 20% of those that sell less than projected. What is the probability that a textbook published by this company will be edited for a second edition?
7. From a collection of 10 math, 5 chemistry, and 15 physics books a book is selected at random. If it is not a math book, what is the probability it is a chemistry book? 8. Textbook publishers estimate that there is a 10% chance that a new book will sell more than projected, a 30% chance that it will sell close to projected, and a 60% chance that it will sell less than projected. Of the new books that sell more than projected, 70% are revised for a second edition, as are 50% of those that sell close to projected, and 20% of those that sell less than projected. What is the probability that a textbook published by this company will be edited for a second edition?
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section: Chapter Questions
Problem 34T
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I need help with this problem and an explanation of the solution for the image described below. (Statistics: Engineering Probabilities)
Transcribed Image Text:7. From a collection of 10 math, 5 chemistry, and 15 physics books a book is selected at random. If
it is not a math book, what is the probability it is a chemistry book?
8. Textbook publishers estimate that there is a 10% chance that a new book will sell more than
projected, a 30% chance that it will sell close to projected, and a 60% chance that it will sell
less than projected. Of the new books that sell more than projected, 70% are revised for a
second edition, as are 50% of those that sell close to projected, and 20% of those that sell less
than projected. What is the probability that a textbook published by this company will be edited
for a second edition?
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