Introductory Statistics 9th Edition

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

Chapter 4 - Advanced Exercises - Page 171: 4.106


a. P(thief finds the correct PIN) = $\frac{1}{10}\times\frac{1}{10}$ = $\frac{1}{100}$ b. P( guessing the correct PIN) = $\frac{1}{1\times1\times2\times10} $ = $\frac{1}{20}$ = 0.05

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