15 400 people were questioned as to whether they read novels in paperback form or on an e-reader. 20% said they do both. 30% said they read paperbacks. The probability that a person who didn't read paperbacks also didn't read on an e-reader was 25% a) Represent this information in the two-way table below Total Total b) Calculate the probability that a randomly selected person reads novels on an e-reader but not in paperback. c) Of those that read on e-readers, what percentage read in both formats? Give your answer correct to the nearest percent.

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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15 400 people were questioned as to whether they read novels in paperback form or on an e-reader.
20% said they do both.
30% said they read paperbacks.
The probability that a person who didn't read paperbacks also didn't read on an e-reader was 25%
a) Represent this information in the two-way table below
Total
Total
b) Calculate the probability that a randomly selected person reads novels on an e-reader but not in
paperback.
c) Of those that read on e-readers, what percentage read in both formats? Give your answer correct
to the nearest percent.
Transcribed Image Text:15 400 people were questioned as to whether they read novels in paperback form or on an e-reader. 20% said they do both. 30% said they read paperbacks. The probability that a person who didn't read paperbacks also didn't read on an e-reader was 25% a) Represent this information in the two-way table below Total Total b) Calculate the probability that a randomly selected person reads novels on an e-reader but not in paperback. c) Of those that read on e-readers, what percentage read in both formats? Give your answer correct to the nearest percent.
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