Introductory Statistics 9th Edition

Published by Wiley
ISBN 10: 1-11905-571-7
ISBN 13: 978-1-11905-571-6

Chapter 4 - Section 4.5 - Union of Events and the Addition Rule - Exercises - Page 161: 4.73


a.P(has never shopped on the Internet or is a female)= $\frac{700 + 500}{2000}$ +$\frac{300+500}{2000}$ - $\frac{500}{2000}$ = 0.75 b.P(is a male or has shopped on the Internet)=$\frac{500+300}{2000}$ +$\frac{500+700}{2000}$ - $\frac{500}{2000}$ = 0.75 c. P(has shopped on the Internet or has never shopped on the Internet)=$\frac{300 + 500}{2000}$ +$\frac{500+700}{2000}$ = 1

Work Step by Step

see above.
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